CHANGELOG.md

0.11.0

• STORM-1404: Fix Mockito test failures in storm-kafka.
• STORM-1379: Removed Redundant Structure
• STORM-706: Clarify examples README for IntelliJ.
• STORM-1396: Added backward compatibility method for File Download
• STORM-695: storm CLI tool reports zero exit code on error scenario
• STORM-1416: Documentation for state store
• STORM-1426: keep backtype.storm.tuple.AddressedTuple and delete duplicated backtype.storm.messaging.AddressedTuple
• STORM-1417: fixed equals/hashCode contract in CoordType
• STORM-1422: broken example in storm-starter tutorial
• STORM-1429: LocalizerTest fix
• STORM-1401: removes multilang-test
• STORM-1424: Removed unused topology-path variable
• STORM-1427: add TupleUtils/listHashCode method and delete tuple.clj
• STORM-1413: remove unused variables for some tests
• STORM-1412: null check should be done in the first place
• STORM-1210: Set Output Stream id in KafkaSpout
• STORM-1397: Merge conflict from Pacemaker merge
• STORM-1373: Blobstore API sample example usage
• STORM-1409: StormClientErrorHandler is not used
• STORM-1411: Some fixes for storm-windowing
• STORM-1399: Blobstore tests should write data to target so it gets removed when running mvn clean
• STORM-1398: Add back in TopologyDetails.getTopology
• STORM-898: Add priorities and per user resource guarantees to Resource Aware Scheduler
• STORM-1187: Support windowing based on tuple ts.
• STORM-1400: Netty Context removeClient() called after term() causes NullPointerException.
• STORM-1383: Supervisors should not crash if nimbus is unavailable
• STORM-1381: Client side topology submission hook.
• STORM-1376: Performance slowdown due excessive zk connections and log-debugging
• STORM-1395: Move JUnit dependency to top-level pom
• STORM-1372: Merging design and usage documents for distcache
• STORM-1393: Update the storm.log.dir function, add doc for logs
• STORM-1377: nimbus_auth_test: very short timeouts causing spurious failures
• STORM-1388: Fix url and email links in README file
• STORM-1389: Removed creation of projection tuples as they are already available
• STORM-1179: Create Maven Profiles for Integration Tests.
• STORM-1387: workers-artifacts directory configurable, and default to be under storm.log.dir.
• STORM-1211: Add trident state and query support for cassandra connector
• STORM-1359: Change kryo links from google code to github
• STORM-1385: Divide by zero exception in stats.clj
• STORM-1370: Bug fixes for MultitenantScheduler
• STORM-1374: fix random failure on WindowManagerTest
• STORM-1040: SQL support for Storm.
• STORM-1364: Log storm version on daemon start
• STORM-1375: Blobstore broke Pacemaker
• STORM-876: Blobstore/DistCache Support
• STORM-1361: Apache License missing from two Cassandra files
• STORM-756: Handle taskids response as soon as possible
• STORM-1218: Use markdown for JavaDoc.
• STORM-1075: Storm Cassandra connector.
• STORM-965: excessive logging in storm when non-kerberos client tries to connect
• STORM-1341: Let topology have own heartbeat timeout for multilang subprocess
• STORM-1207: Added flux support for IWindowedBolt
• STORM-1352: Trident should support writing to multiple Kafka clusters.
• STORM-1220: Avoid double copying in the Kafka spout.
• STORM-1340: Use Travis-CI build matrix to improve test execution times
• STORM-1126: Allow a configMethod that takes no arguments (Flux)
• STORM-1203: worker metadata file creation doesn't use storm.log.dir config
• STORM-1349: [Flux] Allow constructorArgs to take Maps as arguments
• STORM-126: Add Lifecycle support API for worker nodes
• STORM-1213: Remove sigar binaries from source tree
• STORM-885: Heartbeat Server (Pacemaker)
• STORM-1221: Create a common interface for all Trident spout.
• STORM-1198: Web UI to show resource usages and Total Resources on all supervisors
• STORM-1167: Add windowing support for storm core.
• STORM-1215: Use Async Loggers to avoid locking and logging overhead
• STORM-1204: Logviewer should graceful report page-not-found instead of 500 for bad topo-id etc
• STORM-831: Add BugTracker and Central Logging URL to UI
• STORM-1208: UI: NPE seen when aggregating bolt streams stats
• STORM-1016: Generate trident bolt ids with sorted group names
• STORM-1190: System Load too high after recent changes
• STORM-1098: Nimbus hook for topology actions.
• STORM-1145: Have IConnection push tuples instead of pull them
• STORM-1191: bump timeout by 50% due to intermittent travis build failures
• STORM-794: Modify Spout async loop to treat activate/deactivate ASAP
• STORM-1196: Upgrade to thrift 0.9.3
• STORM-1155: Supervisor recurring health checks
• STORM-1189: Maintain wire compatability with 0.10.x versions of storm.
• STORM-1185: replace nimbus.host with nimbus.seeds
• STORM-1164: Code cleanup for typos, warnings and conciseness.
• STORM-902: Simple Log Search.
• STORM-1052: TridentKafkaState uses new Kafka Producer API.
• STORM-1182: Removing and wrapping some exceptions in ConfigValidation to make code cleaner
• STORM-1134. Windows: Fix log4j config.
• STORM-1127: allow for boolean arguments (Flux)
• STORM-1180: FLUX logo wasn't appearing quite right
• STORM-1138: Storm-hdfs README should be updated with Avro Bolt information
• STORM-1154: SequenceFileBolt needs unit tests
• STORM-162: Load Aware Shuffle Grouping
• STORM-1158: Storm metrics to profile various storm functions
• STORM-1161: Add License headers and add rat checks to builds
• STORM-1165: normalize the scales of CPU/Mem/Net when choosing the best node for Resource Aware Scheduler
• STORM-1163: use rmr rather than rmpath for remove worker-root
• STORM-1170: Fix the producer alive issue in DisruptorQueueTest
• STORM-1168: removes noisy log message & a TODO
• STORM-1143: Validate topology Configs during topology submission
• STORM-1157: Adding dynamic profiling for worker, restarting worker, jstack, heap dump, and profiling
• STORM-1123: TupleImpl - Unnecessary variable initialization.
• STORM-1153: Use static final instead of just static for class members.
• STORM-817: Kafka Wildcard Topic Support.
• STORM-40: Turn worker garbage collection and heapdump on by default.
• STORM-1152: Change map keySet iteration to entrySet iteration for efficiency.
• STORM-1147: Storm JDBCBolt should add validation to ensure either insertQuery or table name is specified and not both.
• STORM-1151: Batching in DisruptorQueue
• STORM-350: Update disruptor to latest version (3.3.2)
• STORM-697: Support for Emitting Kafka Message Offset and Partition
• STORM-1074: Add Avro HDFS bolt
• STORM-566: Improve documentation including incorrect Kryo ser. framework docs
• STORM-1073: Refactor AbstractHdfsBolt
• STORM-1128: Make metrics fast
• STORM-1122: Fix the format issue in Utils.java
• STORM-1111: Fix Validation for lots of different configs
• STORM-1125: Adding separate ZK client for read in Nimbus ZK State
• STORM-1121: Remove method call to avoid overhead during topology submission time
• STORM-1120: Fix keyword (schema -> scheme) from main-routes
• STORM-1115: Stale leader-lock key effectively bans all nodes from becoming leaders
• STORM-1119: Create access logging for all daemons
• STORM-1117: Adds visualization-init route previously missing
• STORM-1118: Added test to compare latency vs. throughput in storm.
• STORM-1110: Fix Component Page for system components
• STORM-1093: Launching Workers with resources specified in resource-aware schedulers
• STORM-1102: Add a default flush interval for HiveBolt
• STORM-1112: Add executor id to the thread name of the executor thread for debug
• STORM-1079: Batch Puts to HBase
• STORM-1084: Improve Storm config validation process to use java annotations instead of *_SCHEMA format
• STORM-1106: Netty should not limit attempts to reconnect
• STORM-1103: Changes log message to DEBUG from INFO
• STORM-1104: Nimbus HA fails to find newly downloaded code files
• STORM-1087: Avoid issues with transfer-queue backpressure.
• STORM-893: Resource Aware Scheduling (Experimental)
• STORM-1095: Tuple.getSourceGlobalStreamid() has wrong camel-case naming
• STORM-1091: Add unit test for tick tuples to HiveBolt and HdfsBolt
• STORM-1090: Nimbus HA should support storm.local.hostname
• STORM-820: Aggregate topo stats on nimbus, not ui
• STORM-412: Allow users to modify logging levels of running topologies
• STORM-1078: Updated RateTracker to be thread safe
• STORM-1082: fix nits for properties in kafka tests
• STORM-993: include uptimeSeconds as JSON integer field
• STORM-1053: Update storm-kafka README for new producer API confs.
• STORM-1058: create CLI kill_workers to kill workers on a supervisor node
• STORM-1063: support relative log4j conf dir for both daemons and workers
• STORM-1059: Upgrade Storm to use Clojure 1.7.0
• STORM-1069: add check case for external change of 'now' value.
• STORM-969: HDFS Bolt can end up in an unrecoverable state.
• STORM-1068: Configure request.required.acks to be 1 in KafkaUtilsTest for sync
• STORM-1017: If ignoreZkOffsets set true,KafkaSpout will reset zk offset when recover from failure.
• STORM-1054: Excessive logging ShellBasedGroupsMapping if the user doesn't have any groups.
• STORM-954: Toplogy Event Inspector
• STORM-862: Pluggable System Metrics
• STORM-1032: Add generics to component configuration methods
• STORM-886: Automatic Back Pressure
• STORM-1037: do not remove storm-code in supervisor until kill job
• STORM-1007: Add more metrics to DisruptorQueue
• STORM-1011: HBaseBolt default mapper should handle null values
• STORM-1019: Added missing dependency version to use of org.codehaus.mojo:make-maven-plugin
• STORM-1020: Document exceptions in ITuple & Fields
• STORM-1025: Invalid links at https://storm.apache.org/about/multi-language.html
• STORM-1010: Each KafkaBolt could have a specified properties.
• STORM-1008: Isolate the code for metric collection and retrieval from DisruptorQueue
• STORM-991: General cleanup of the generics (storm.trident.spout package)
• STORM-1000: Use static member classes when permitted
• STORM-1003: In cluster.clj replace task-id with component-id in the declaration
• STORM-1013: [storm-elasticsearch] Expose TransportClient configuration Map to EsConfig
• STORM-1012: Shading jackson.
• STORM-974: [storm-elasticsearch] Introduces Tuple -> ES document mapper to get rid of constant field mapping (source, index, type)
• STORM-978: [storm-elasticsearch] Introduces Lookup(or Query)Bolt which emits matched documents from ES
• STORM-851: Storm Solr connector
• STORM-854: [Storm-Kafka] KafkaSpout can set the topic name as the output streamid
• STORM-990: Refactored TimeCacheMap to extend RotatingMap
• STORM-829: Hadoop dependency confusion
• STORM-166: Nimbus HA
• STORM-976: Config storm.logback.conf.dir is specific to previous logging framework
• STORM-995: Fix excessive logging
• STORM-837: HdfsState ignores commits
• STORM-938: storm-hive add a time interval to flush tuples to hive.
• STORM-964: Add config (with small default value) for logwriter to restrict its memory usage
• STORM-980: Re-include storm-kafka tests from Travis CI build
• STORM-960: HiveBolt should ack tuples only after flushing.
• STORM-951: Storm Hive connector leaking connections.
• STORM-806: use storm.zookeeper.connection.timeout in storm-kafka ZkState when newCurator
• STORM-809: topology.message.timeout.secs should not allow for null or <= 0 values
• STORM-847: Add cli to get the last storm error from the topology
• STORM-864: Exclude storm-kafka tests from Travis CI build
• STORM-477: Add warning for invalid JAVA_HOME
• STORM-826: Update KafkaBolt to use the new kafka producer API
• STORM-912: Support SSL on Logviewer
• STORM-934: The current doc for topology ackers is outdated
• STORM-160: Allow ShellBolt to set env vars (particularly PATH)
• STORM-937: Changing noisy log level from info to debug
• STORM-931: Python Scripts to Produce Formatted JIRA and GitHub Join
• STORM-924: Set the file mode of the files included when packaging release packages
• STORM-799: Use IErrorReport interface more broadly
• STORM-926: change pom to use maven-shade-plugin:2.2
• STORM-942: Add FluxParser method parseInputStream() to eliminate disk usage
• STORM-67: Provide API for spouts to know how many pending messages there are
• STORM-918: Storm CLI could validate arguments/print usage
• STORM-859: Add regression test of STORM-856
• STORM-913: Use Curator's delete().deletingChildrenIfNeeded() instead of zk/delete-recursive
• STORM-968: Adding support to generate the id based on names in Trident
• STORM-845: Storm ElasticSearch connector
• STORM-988: supervisor.slots.ports should not allow duplicate element values
• STORM-975: Storm-Kafka trident topology example
• STORM-958: Add config for init params of group mapping service
• STORM-949: On the topology summary UI page, last shown error should have the time and date
• STORM-1142: Some config validators for positive ints need to allow 0
• STORM-901: Worker Artifacts Directory
• STORM-1144: Display requested and assigned cpu/mem resources for schedulers in UI
• STORM-1217: making small fixes in RAS

0.10.0-beta2

• STORM-581: Add rebalance params to Storm REST API
• STORM-1108: Fix NPE in simulated time
• STORM-1099: Fix worker childopts as arraylist of strings
• STORM-1094: advance kafka offset when deserializer yields no object
• STORM-1066: Specify current directory when supervisor launches a worker
• STORM-1012: Shaded everything that was not already shaded
• STORM-967: Shaded everything that was not already shaded
• STORM-922: Shaded everything that was not already shaded
• STORM-1042: Shaded everything that was not already shaded
• STORM-1026: Adding external classpath elements does not work
• STORM-1055: storm-jdbc README needs fixes and context
• STORM-1044: Setting dop to zero does not raise an error
• STORM-1050: Topologies with same name run on one cluster
• STORM-1005: Supervisor do not get running workers after restart.
• STORM-803: Better CI logs
• STORM-1027: Use overflow buffer for emitting metrics
• STORM-1024: log4j changes leaving ${sys:storm.log.dir} under STORM_HOME dir
• STORM-944: storm-hive pom.xml has a dependency conflict with calcite
• STORM-994: Connection leak between nimbus and supervisors
• STORM-1001: Undefined STORM_EXT_CLASSPATH adds '::' to classpath of workers
• STORM-977: Incorrect signal (-9) when as-user is true
• STORM-843: [storm-redis] Add Javadoc to storm-redis
• STORM-866: Use storm.log.dir instead of storm.home in log4j2 config
• STORM-810: PartitionManager in storm-kafka should commit latest offset before close
• STORM-928: Add sources->streams->fields map to Multi-Lang Handshake
• STORM-945: element is not a policy,and should not be putted in the element.
• STORM-857: create logs metadata dir when running securely
• STORM-793: Made change to logviewer.clj in order to remove the invalid http 500 response
• STORM-139: hashCode does not work for byte[]
• STORM-860: UI: while topology is transitioned to killed, "Activate" button is enabled but not functioning
• STORM-966: ConfigValidation.DoubleValidator doesn't really validate whether the type of the object is a double
• STORM-742: Let ShellBolt treat all messages to update heartbeat
• STORM-992: A bug in the timer.clj might cause unexpected delay to schedule new event

0.10.0

• STORM-1096: Fix some issues with impersonation on the UI

0.10.0-beta1

• STORM-873: Flux does not handle diamond topologies

0.10.0-beta

• STORM-867: fix bug with mk-ssl-connector
• STORM-856: use serialized value of delay secs for topo actions
• STORM-852: Replaced Apache Log4j Logger with SLF4J API
• STORM-813: Change storm-starter's README so that it explains mvn exec:java cannot run multilang topology
• STORM-853: Fix upload API to handle multi-args properly
• STORM-850: Convert storm-core's logback-test.xml to log4j2-test.xml
• STORM-848: Shade external dependencies
• STORM-849: Add storm-redis to storm binary distribution
• STORM-760: Use JSON for serialized conf
• STORM-833: Logging framework logback -> log4j 2.x
• STORM-842: Drop Support for Java 1.6
• STORM-835: Netty Client hold batch object until io operation complete
• STORM-827: Allow AutoTGT to work with storm-hdfs too.
• STORM-821: Adding connection provider interface to decouple jdbc connector from a single connection pooling implementation.
• STORM-818: storm-eventhubs configuration improvement and refactoring
• STORM-816: maven-gpg-plugin does not work with gpg 2.1
• STORM-811: remove old metastor_db before running tests again.
• STORM-808: allow null to be parsed as null
• STORM-807: quote args to storm.py correctly
• STORM-801: Add Travis CI badge to README
• STORM-797: DisruptorQueueTest has some race conditions in it.
• STORM-796: Add support for "error" command in ShellSpout
• STORM-795: Update the user document for the extlib issue
• STORM-792: Missing documentation in backtype.storm.generated.Nimbus
• STORM-791: Storm UI displays maps in the config incorrectly
• STORM-790: Log "task is null" instead of let worker died when task is null in transfer-fn
• STORM-789: Send more topology context to Multi-Lang components via initial handshake
• STORM-788: UI Fix key for process latencies
• STORM-787: test-ns should announce test failures with 'BUILD FAILURE'
• STORM-786: KafkaBolt should ack tick tuples
• STORM-773: backtype.storm.transactional-test fails periodically with timeout
• STORM-772: Tasts fail periodically with InterruptedException or InterruptedIOException
• STORM-766: Include version info in the service page
• STORM-765: Thrift serialization for local state
• STORM-764: Have option to compress thrift heartbeat
• STORM-762: uptime for worker heartbeats is lost when converted to thrift
• STORM-761: An option for new/updated Redis keys to expire in RedisMapState
• STORM-757: Simulated time can leak out on errors
• STORM-753: Improve RedisStateQuerier to convert List from Redis value
• STORM-752: [storm-redis] Clarify Redis*StateUpdater's expire is optional
• STORM-750: Set Config serialVersionUID
• STORM-749: Remove CSRF check from the REST API.
• STORM-747: assignment-version-callback/info-with-version-callback are not fired when assignments change
• STORM-746: Skip ack init when there are no output tasks
• STORM-745: fix storm.cmd to evaluate 'shift' correctly with 'storm jar'
• STORM-741: Allow users to pass a config value to perform impersonation.
• STORM-740: Simple Transport Client cannot configure thrift buffer size
• STORM-737: Check task->node+port with read lock to prevent sending to closed connection
• STORM-735: [storm-redis] Upgrade Jedis to 2.7.0
• STORM-730: remove extra curly brace
• STORM-729: Include Executors (Window Hint) if the component is of Bolt type
• STORM-727: Storm tests should succeed even if a storm process is running locally.
• STORM-724: Document RedisStoreBolt and RedisLookupBolt which is missed.
• STORM-723: Remove RedisStateSetUpdater / RedisStateSetCountQuerier which didn't tested and have a bug
• STORM-721: Storm UI server should support SSL.
• STORM-715: Add a link to AssignableMetric.java in Metrics.md
• STORM-714: Make CSS more consistent with self, prev release
• STORM-713: Include topic information with Kafka metrics.
• STORM-712: Storm daemons shutdown if OutOfMemoryError occurs in any thread
• STORM-711: All connectors should use collector.reportError and tuple anchoring.
• STORM-708: CORS support for STORM UI.
• STORM-707: Client (Netty): improve logging to help troubleshooting connection woes
• STORM-704: Apply Travis CI to Apache Storm Project
• STORM-703: With hash key option for RedisMapState, only get values for keys in batch
• STORM-699: storm-jdbc should support custom insert queries.
• STORM-696: Single Namespace Test Launching
• STORM-694: java.lang.ClassNotFoundException: backtype.storm.daemon.common.SupervisorInfo
• STORM-693: KafkaBolt exception handling improvement.
• STORM-691: Add basic lookup / persist bolts
• STORM-690: Return Jedis into JedisPool with marking 'broken' if connection is broken
• STORM-689: SimpleACLAuthorizer should provide a way to restrict who can submit topologies.
• STORM-688: update Util to compile under JDK8
• STORM-687: Storm UI does not display up to date information despite refreshes in IE
• STORM-685: wrong output in log when committed offset is too far behind latest offset
• STORM-684: In RichSpoutBatchExecutor: underlying spout is not closed when emitter is closed
• STORM-683: Make false in a conf really evaluate to false in clojure.
• STORM-682: supervisor should handle worker state corruption gracefully.
• STORM-681: Auto insert license header with genthrift.sh
• STORM-675: Allow users to have storm-env.sh under config dir to set custom JAVA_HOME and other env variables.
• STORM-673: Typo 'deamon' in security documentation
• STORM-672: Typo in Trident documentation example
• STORM-670: restore java 1.6 compatibility (storm-kafka)
• STORM-669: Replace links with ones to latest api document
• STORM-667: Incorrect capitalization "SHell" in Multilang-protocol.md
• STORM-663: Create javadocs for BoltDeclarer
• STORM-659: return grep matches each on its own line.
• STORM-657: make the shutdown-worker sleep time before kill -9 configurable
• STORM-656: Document "external" modules and "Committer Sponsors"
• STORM-651: improvements to storm.cmd
• STORM-641: Add total number of topologies to api/v1/cluster/summary.
• STORM-640: Storm UI vulnerable to poodle attack.
• STORM-637: Integrate PartialKeyGrouping into storm API
• STORM-636: Faster, optional retrieval of last component error
• STORM-635: logviewer returns 404 if storm_home/logs is a symlinked dir.
• STORM-634: Storm serialization changed to thrift to support rolling upgrade.
• STORM-632: New grouping for better load balancing
• STORM-630: Support for Clojure 1.6.0
• STORM-629: Place Link to Source Code Repository on Webpage
• STORM-627: Storm-hbase configuration error.
• STORM-626: Add script to print out the merge command for a given pull request.
• STORM-625: Don't leak netty clients when worker moves or reuse netty client.
• STORM-623: Generate latest javadocs
• STORM-620: Duplicate maven plugin declaration
• STORM-616: Storm JDBC Connector.
• STORM-615: Add REST API to upload topology.
• STORM-613: Fix wrong getOffset return value
• STORM-612: Update the contact address in configure.ac
• STORM-611: Remove extra "break"s
• STORM-610: Check the return value of fts_close()
• STORM-609: Add storm-redis to storm external
• STORM-608: Storm UI CSRF escape characters not work correctly.
• STORM-607: storm-hbase HBaseMapState should support user to customize the hbase-key & hbase-qualifier
• STORM-603: Log errors when required kafka params are missing
• STORM-601: Make jira-github-join ignore case.
• STORM-600: upgrade jacoco plugin to support jdk8
• STORM-599: Use nimbus's cached heartbeats rather than fetching again from ZK
• STORM-596: remove config topology.receiver.buffer.size
• STORM-595: storm-hdfs can only work with sequence files that use Writables.
• STORM-586: Trident kafka spout fails instead of updating offset when kafka offset is out of range.
• STORM-585: Performance issue in none grouping
• STORM-583: Add Microsoft Azure Event Hub spout implementations
• STORM-578: Calls to submit-mocked-assignment in supervisor-test use invalid executor-id format
• STORM-577: long time launch worker will block supervisor heartbeat
• STORM-575: Ability to specify Jetty host to bind to
• STORM-572: Storm UI 'favicon.ico'
• STORM-572: Allow Users to pass TEST-TIMEOUT-MS for java
• STORM-571: upgrade clj-time.
• STORM-570: Switch from tablesorter to datatables jquery plugin.
• STORM-569: Add Conf for bolt's outgoing overflow-buffer.
• STORM-567: Move Storm Documentation/Website from SVN to git
• STORM-565: Fix NPE when topology.groups is null.
• STORM-563: Kafka Spout doesn't pick up from the beginning of the queue unless forceFromStart specified.
• STORM-561: Add flux as an external module
• STORM-557: High Quality Images for presentations
• STORM-554: the type of first param "topology" should be ^StormTopology not ^TopologyContext
• STORM-552: Add netty socket backlog config
• STORM-548: Receive Thread Shutdown hook should connect to local hostname but not Localhost
• STORM-541: Build produces maven warnings
• STORM-539: Storm Hive Connector.
• STORM-533: Add in client and server IConnection metrics.
• STORM-527: update worker.clj -- delete "missing-tasks" checking
• STORM-525: Add time sorting function to the 2nd col of bolt exec table
• STORM-512: KafkaBolt doesn't handle ticks properly
• STORM-505: Fix debug string construction
• STORM-495: KafkaSpout retries with exponential backoff
• STORM-487: Remove storm.cmd, no need to duplicate work python runs on windows too.
• STORM-483: provide dedicated directories for classpath extension
• STORM-456: Storm UI: cannot navigate to topology page when name contains spaces.
• STORM-446: Allow superusers to impersonate other users in secure mode.
• STORM-444: Add AutoHDFS like credential fetching for HBase
• STORM-442: multilang ShellBolt/ShellSpout die() can be hang when Exception happened
• STORM-441: Remove bootstrap macro from Clojure codebase
• STORM-410: Add groups support to log-viewer
• STORM-400: Thrift upgrade to thrift-0.9.2
• STORM-329: fix cascading Storm failure by improving reconnection strategy and buffering messages (thanks tedxia)
• STORM-322: Windows script do not handle spaces in JAVA_HOME path
• STORM-248: cluster.xml location is hardcoded for workers
• STORM-243: Record version and revision information in builds
• STORM-188: Allow user to specifiy full configuration path when running storm command
• STORM-130: Supervisor getting killed due to java.io.FileNotFoundException: File '../stormconf.ser' does not exist.

0.9.6

• STORM-996: netty-unit-tests/test-batch demonstrates out-of-order delivery
• STORM-1056: allow supervisor log filename to be configurable via ENV variable
• STORM-1051: Netty Client.java's flushMessages produces a NullPointerException
• STORM-763: nimbus reassigned worker A to another machine, but other worker's netty client can't connect to the new worker A
• STORM-935: Update Disruptor queue version to 2.10.4
• STORM-503: Short disruptor queue wait time leads to high CPU usage when idle
• STORM-728: Put emitted and transferred stats under correct columns
• STORM-643: KafkaUtils repeatedly fetches messages whose offset is out of range
• STORM-933: NullPointerException during KafkaSpout deactivation

0.9.5

• STORM-790: Log "task is null" instead of let worker died when task is null in transfer-fn
• STORM-796: Add support for "error" command in ShellSpout
• STORM-745: fix storm.cmd to evaluate 'shift' correctly with 'storm jar'
• STORM-130: Supervisor getting killed due to java.io.FileNotFoundException: File '../stormconf.ser' does not exist.

0.9.4

• STORM-559: ZkHosts in README should use 2181 as port.
• STORM-682: supervisor should handle worker state corruption gracefully.
• STORM-693: when kafka bolt fails to write tuple, it should report error instead of silently acking.
• STORM-329: fix cascading Storm failure by improving reconnection strategy and buffering messages
• STORM-130: Supervisor getting killed due to java.io.FileNotFoundException: File '../stormconf.ser' does not exist.

0.9.3-rc2

• STORM-558: change "swap!" to "reset!" to fix assignment-versions in supervisor
• STORM-555: Storm json response should set charset to UTF-8
• STORM-513: check heartbeat from multilang subprocess
• STORM-549: "topology.enable.message.timeouts" does nothing
• STORM-546: Local hostname configuration ignored by executor
• STORM-492: Test timeout should be configurable
• STORM-540: Change default time format in logs to ISO8601 in order to include timezone
• STORM-511: Storm-Kafka spout keeps sending fetch requests with invalid offset
• STORM-538: Guava com.google.thirdparty.publicsuffix is not shaded
• STORM-497: don't modify the netty server taskToQueueId mapping while the someone could be reading it.
• STORM-537: A worker reconnects infinitely to another dead worker (Sergey Tryuber)

0.9.3-rc1

• STORM-519: add tuple as an input param to HBaseValueMapper
• STORM-488: Exit with 254 error code if storm CLI is run with unknown command
• STORM-506: Do not count bolt acks & fails in total stats
• STORM-490: fix build under Windows
• STORM-439: Replace purl.js qith jquery URL plugin
• STORM-499: Document and clean up shaded dependncy resolution with maven
• STORM-210: Add storm-hbase module
• STORM-507: Topology visualization should not block ui
• STORM-504: Class used by repl command is deprecated.
• STORM-330: Implement storm exponential backoff stategy for netty client and curator
• STORM-461: exit-process! does not always exit the process, but throws an exception
• STORM-341: fix assignment sorting
• STORM-476: external/storm-kafka: avoid NPE on null message payloads
• STORM-424: fix error message related to kafka offsets
• STORM-454: correct documentation in STORM-UI-REST-API.md
• STORM-474: Reformat UI HTML code
• STORM-447: shade/relocate packages of dependencies that are common causes of dependency conflicts
• STORM-279: cluster.xml doesn't take in STORM_LOG_DIR values.
• STORM-380: Kafka spout: throw RuntimeException if a leader cannot be found for a partition
• STORM-435: Improve storm-kafka documentation
• STORM-405: Add kafka trident state so messages can be sent to kafka topic
• STORM-211: Add module for HDFS integration
• STORM-337: Expose managed spout ids publicly
• STORM-320: Support STORM_CONF_DIR environment variable to support
• STORM-360: Add node details for Error Topology and Component pages
• STORM-54: Per-Topology Classpath and Environment for Workers
• STORM-355: excluding outdated netty transitively included via curator
• STORM-183: Replacing RunTime.halt() with RunTime.exit()
• STORM-213: Decouple In-Process ZooKeeper from LocalCluster.
• STORM-365: Add support for Python 3 to storm command.
• STORM-332: Enable Kryo serialization in storm-kafka
• STORM-370: Add check for empty table before sorting dom in UI
• STORM-359: add logviewer paging and download
• STORM-372: Typo in storm_env.ini
• STORM-266: Adding shell process pid and name in the log message
• STORM-367: Storm UI REST api documentation.
• STORM-200: Proposal for Multilang's Metrics feature
• STORM-351: multilang python process fall into endless loop
• STORM-375: Smarter downloading of assignments by supervisors and workers
• STORM-328: More restrictive Config checks, strict range check within Utils.getInt()
• STORM-381: Replace broken jquery.tablesorter.min.js to latest
• STORM-312: add storm monitor tools to monitor throughtput interactively
• STORM-354: Testing: allow users to pass TEST-TIMEOUT-MS as param for complete-topology
• STORM-254: one Spout/Bolt can register metric twice with same name in different timeBucket
• STORM-403: heartbeats-to-nimbus in supervisor-test failed due to uninten...
• STORM-402: FileNotFoundException when using storm with apache tika
• STORM-364: The exception time display as default timezone.
• STORM-420: Missing quotes in storm-starter python code
• STORM-399: Kafka Spout defaulting to latest offset when current offset is older then 100k
• STORM-421: Memoize local hostname lookup in executor
• STORM-414: support logging level to multilang protocol spout and bolt
• STORM-321: Added a tool to see the current status of STORM JIRA and github pulls.
• STORM-415: validate-launched-once in supervisor-test can not handle multiple topologies
• STORM-155: Storm rebalancing code causes multiple topologies assigned to a single port
• STORM-419: Updated test so sort ordering is very explicit.
• STORM-406: Fix for reconnect logic in netty client.
• STORM-366: Add color span to most recent error and fix ui templates.
• STORM-369: topology summary page displays wrong order.
• STORM-239: Allow supervisor to operate in paths with spaces in them
• STORM-87: fail fast on ShellBolt exception
• STORM-417: Storm UI lost table sort style when tablesorter was updated
• STORM-396: Replace NullPointerException with IllegalArgumentExeption
• STORM-451: Latest storm does not build due to a pom.xml error in storm-hdfs pom.xml
• STORM-453: migrated to curator 2.5.0
• STORM-458: sample spout uses incorrect name when connecting bolt
• STORM-455: Report error-level messages from ShellBolt children
• STORM-443: multilang log's loglevel protocol can cause hang
• STORM-449: Updated ShellBolt to not exit when shutting down.
• STORM-464: Simulated time advanced after test cluster exits causes intermittent test failures
• STORM-463: added static version of metrics helpers for Config
• STORM-376: Add compression to serialization
• STORM-437: Enforce utf-8 when multilang reads from stdin
• STORM-361: Add JSON-P support to Storm UI API
• STORM-373: Provide Additional String substitutions for *.worker.childopts
• STORM-274: Add support for command remoteconfvalue in storm.cmd
• STORM-132: sort supervisor by free slot in desending order
• STORM-472: Improve error message for non-completeable testing spouts
• STORM-401: handle InterruptedIOException properly.
• STORM-461: exit-process! does not always exit the process, but throws an exception instead
• STORM-475: Storm UI pages do not use UTF-8
• STORM-336: Logback version should be upgraded
• STORM-386: nodejs multilang protocol implementation and examples
• STORM-500: Add Spinner when UI is loading stats from nimbus
• STORM-501: Missing StormSubmitter API
• STORM-493: Workers inherit storm.conf.file/storm.options properties of their supervisor
• STORM-498: make ZK connection timeout configurable in Kafka spout
• STORM-428: extracted ITuple interface
• STORM-508: Update DEVELOPER.md now that Storm has graduated from Incubator
• STORM-514: Update storm-starter README now that Storm has graduated from Incubator

0.9.2-incubating

• STORM-66: send taskid on initial handshake
• STORM-342: Contention in Disruptor Queue which may cause out of order or lost messages
• STORM-338: Move towards idiomatic Clojure style
• STORM-335: add drpc test for removing timed out requests from queue
• STORM-69: Storm UI Visualizations for Topologies
• STORM-297: Performance scaling with CPU
• STORM-244: DRPC timeout can return null instead of throwing an exception
• STORM-63: remove timeout drpc request from its function's request queue
• STORM-313: Remove log-level-page from logviewer
• STORM-205: Add REST API To Storm UI
• STORM-326: tasks send duplicate metrics
• STORM-331: Update the Kafka dependency of storm-kafka to 0.8.1.1
• STORM-308: Add support for config_value to {supervisor,nimbus,ui,drpc,logviewer} childopts
• STORM-309: storm-starter Readme: windows documentation update
• STORM-318: update storm-kafka to use apache curator-2.4.0
• STORM-303: storm-kafka reliability improvements
• STORM-233: Removed inline heartbeat to nimbus to avoid workers being killed when under heavy ZK load
• STORM-267: fix package name of LoggingMetricsConsumer in storm.yaml.example
• STORM-265: upgrade to clojure 1.5.1
• STORM-232: ship JNI dependencies with the topology jar
• STORM-295: Add storm configuration to define JAVA_HOME
• STORM-138: Pluggable serialization for multilang
• STORM-264: Removes references to the deprecated topology.optimize
• STORM-245: implement Stream.localOrShuffle() for trident
• STORM-317: Add SECURITY.md to release binaries
• STORM-310: Change Twitter authentication
• STORM-305: Create developer documentation
• STORM-280: storm unit tests are failing on windows
• STORM-298: Logback file does not include full path for metrics appender fileNamePattern
• STORM-316: added validation to registermetrics to have timebucketSizeInSecs >= 1
• STORM-315: Added progress bar when submitting topology
• STORM-214: Windows: storm.cmd does not properly handle multiple -c arguments
• STORM-306: Add security documentation
• STORM-302: Fix Indentation for pom.xml in storm-dist
• STORM-235: Registering a null metric should blow up early
• STORM-113: making thrift usage thread safe for local cluster
• STORM-223: use safe parsing for reading YAML
• STORM-238: LICENSE and NOTICE files are duplicated in storm-core jar
• STORM-276: Add support for logviewer in storm.cmd.
• STORM-286: Use URLEncoder#encode with the encoding specified.
• STORM-296: Storm kafka unit tests are failing on windows
• STORM-291: upgrade http-client to 4.3.3
• STORM-252: Upgrade curator to latest version
• STORM-294: Commas not escaped in command line
• STORM-287: Fix the positioning of documentation strings in clojure code
• STORM-290: Fix a log binding conflict caused by curator dependencies
• STORM-289: Fix Trident DRPC memory leak
• STORM-173: Treat command line "-c" option number config values as such
• STORM-194: Support list of strings in *.worker.childopts, handle spaces
• STORM-288: Fixes version spelling in pom.xml
• STORM-208: Add storm-kafka as an external module
• STORM-285: Fix storm-core shade plugin config
• STORM-12: reduce thread usage of netty transport
• STORM-281: fix and issue with config parsing that could lead to leaking file descriptors
• STORM-196: When JVM_OPTS are set, storm jar fails to detect storm.jar from environment
• STORM-260: Fix a potential race condition with simulated time in Storm's unit tests
• STORM-258: Update commons-io version to 2.4
• STORM-270: don't package .clj files in release jars.
• STORM-273: Error while running storm topologies on Windows using "storm jar"
• STROM-247: Replace links to github resources in storm script
• STORM-263: Update Kryo version to 2.21+
• STORM-187: Fix Netty error "java.lang.IllegalArgumentException: timeout value is negative"
• STORM-186: fix float secs to millis long convertion
• STORM-70: Upgrade to ZK-3.4.5 and curator-1.3.3
• STORM-146: Unit test regression when storm is compiled with 3.4.5 zookeeper

0.9.1-incubating

• Fix to prevent Nimbus from hanging if random data is sent to nimbus thrift port
• Improved support for running on Windows platforms
• Removed dependency on the unzip binary
• Switch build system from Leiningen to Maven
• STORM-1: Replaced 0MQ as the default transport with Netty.
• STORM-181: Nimbus now validates topology configuration when topologies are submitted (thanks d2r)
• STORM-182: Storm UI now includes tooltips to document fields (thanks d2r)
• STORM-195: dependency-reduced-pom.xml should be in .gitignore
• STORM-13: Change license on README.md
• STORM-2: Move all dependencies off of storm-specific builds
• STORM-159: Upload separate source and javadoc jars for maven use
• STORM-149: storm jar doesn't work on Windows

0.9.0.1

• Update build configuration to force compatibility with Java 1.6

0.9.0

• Fixed a netty client issue where sleep times for reconnection could be negative (thanks brndnmtthws)
• Fixed an issue that would cause storm-netty unit tests to fail

0.9.0-rc3

• Added configuration to limit ShellBolt internal _pendingWrites queue length (thanks xiaokang)
• Fixed a a netty client issue where sleep times for reconnection could be negative (thanks brndnmtthws)
• Fixed a display issue with system stats in Storm UI (thanks d2r)
• Nimbus now does worker heartbeat timeout checks as soon as heartbeats are updated (thanks d2r)
• The logviewer now determines log file location by examining the logback configuration (thanks strongh)
• Allow tick tuples to work with the system bolt (thanks xumingming)
• Add default configuration values for the netty transport and the ability to configure the number of worker threads (thanks revans2)
• Added timeout to unit tests to prevent a situation where tests would hang indefinitely (thanks d2r)
• Fixed and issue in the system bolt where local mode would not be detected accurately (thanks miofthena)

0.9.0-rc2

• Fixed storm jar command to work properly when STORM_JAR_JVM_OPTS is not specified (thanks roadkill001)

0.9.0-rc1

• All logging now done with slf4j
• Replaced log4j logging system with logback
• Logs are now limited to 1GB per worker (configurable via logging configuration file)
• Build upgraded to leiningen 2.0
• Revamped Trident spout interfaces to support more dynamic spouts, such as a spout who reads from a changing set of brokers
• How tuples are serialized is now pluggable (thanks anfeng)
• Added blowfish encryption based tuple serialization (thanks anfeng)
• Have storm fall back to installed storm.yaml (thanks revans2)
• Improve error message when Storm detects bundled storm.yaml to show the URL's for offending resources (thanks revans2)
• Nimbus throws NotAliveException instead of FileNotFoundException from various query methods when topology is no longer alive (thanks revans2)
• Escape HTML and Javascript appropriately in Storm UI (thanks d2r)
• Storm's Zookeeper client now uses bounded exponential backoff strategy on failures
• Automatically drain and log error stream of multilang subprocesses
• Append component name to thread name of running executors so that logs are easier to read
• Messaging system used for passing messages between workers is now pluggable (thanks anfeng)
• Netty implementation of messaging (thanks anfeng)
• Include topology id, worker port, and worker id in properties for worker processes, useful for logging (thanks d2r)
• Tick tuples can now be scheduled using floating point seconds (thanks tscurtu)
• Added log viewer daemon and links from UI to logviewers (thanks xiaokang)
• DRPC server childopts now configurable (thanks strongh)
• Default number of ackers to number of workers, instead of just one (thanks lyogavin)
• Validate that Storm configs are of proper types/format/structure (thanks d2r)
• FixedBatchSpout will now replay batches appropriately on batch failure (thanks ptgoetz)
• Can set JAR_JVM_OPTS env variable to add jvm options when calling 'storm jar' (thanks srmelody)
• Throw error if batch id for transaction is behind the batch id in the opaque value (thanks mrflip)
• Sort topologies by name in UI (thanks jaked)
• Added LoggingMetricsConsumer to log all metrics to a file, by default not enabled (thanks mrflip)
• Add prepare(Map conf) method to TopologyValidator (thanks ankitoshniwal)
• Bug fix: Supervisor provides full path to workers to logging config rather than relative path (thanks revans2)
• Bug fix: Call ReducerAggregator#init properly when used within persistentAggregate (thanks lorcan)
• Bug fix: Set component-specific configs correctly for Trident spouts

0.8.3 (unreleased)

• Revert zmq layer to not rely on multipart messages to fix issue reported by some users
• Bug fix: Fix TransactionalMap and OpaqueMap to correctly do multiple updates to the same key in the same batch
• Bug fix: Fix race condition between supervisor and Nimbus that could lead to stormconf.ser errors and infinite crashing of supervisor
• Bug fix: Fix default scheduler to always reassign workers in a constrained topology when there are dead executors
• Bug fix: Fix memory leak in Trident LRUMemoryMapState due to concurrency issue with LRUMap (thanks jasonjckn)
• Bug fix: Properly ignore NoNodeExists exceptions when deleting old transaction states

0.8.2

• Added backtype.storm.scheduler.IsolationScheduler. This lets you run topologies that are completely isolated at the machine level. Configure Nimbus to isolate certain topologies, and how many machines to give to each of those topologies, with the isolation.scheduler.machines config in Nimbus's storm.yaml. Topologies run on the cluster that are not listed there will share whatever remaining machines there are on the cluster after machines are allocated to the listed topologies.
• Storm UI now uses nimbus.host to find Nimbus rather than always using localhost (thanks Frostman)
• Added report-error! to Clojure DSL
• Automatically throttle errors sent to Zookeeper/Storm UI when too many are reported in a time interval (all errors are still logged) Configured with TOPOLOGY_MAX_ERROR_REPORT_PER_INTERVAL and TOPOLOGY_ERROR_THROTTLE_INTERVAL_SECS
• Kryo instance used for serialization can now be controlled via IKryoFactory interface and TOPOLOGY_KRYO_FACTORY config
• Add ability to plug in custom code into Nimbus to allow/disallow topologies to be submitted via NIMBUS_TOPOLOGY_VALIDATOR config
• Added TOPOLOGY_TRIDENT_BATCH_EMIT_INTERVAL_MILLIS config to control how often a batch can be emitted in a Trident topology. Defaults to 500 milliseconds. This is used to prevent too much load from being placed on Zookeeper in the case that batches are being processed super quickly.
• Log any topology submissions errors in nimbus.log
• Add static helpers in Config when using regular maps
• Make Trident much more memory efficient during failures by immediately removing state for failed attempts when a more recent attempt is seen
• Add ability to name portions of a Trident computation and have those names appear in the Storm UI
• Show Nimbus and topology configurations through Storm UI (thanks rnfein)
• Added ITupleCollection interface for TridentState's and TupleCollectionGet QueryFunction for getting the full contents of a state. MemoryMapState and LRUMemoryMapState implement this
• Can now submit a topology in inactive state. Storm will wait to call open/prepare on the spouts/bolts until it is first activated.
• Can now activate, deactive, rebalance, and kill topologies from the Storm UI (thanks Frostman)
• Can now use --config option to override which yaml file from ~/.storm to use for the config (thanks tjun)
• Redesigned the pluggable resource scheduler (INimbus, ISupervisor) interfaces to allow for much simpler integrations
• Added prepare method to IScheduler
• Added "throws Exception" to TestJob interface
• Added reportError to multilang protocol and updated Python and Ruby adapters to use it (thanks Lazyshot)
• Number tuples executed now tracked and shown in Storm UI
• Added ReportedFailedException which causes a batch to fail without killing worker and reports the error to the UI
• Execute latency now tracked and shown in Storm UI
• Adding testTuple methods for easily creating Tuple instances to Testing API (thanks xumingming)
• Trident now throws an error during construction of a topology when try to select fields that don't exist in a stream (thanks xumingming)
• Compute the capacity of a bolt based on execute latency and #executed over last 10 minutes and display in UI
• Storm UI displays exception instead of blank page when there's an error rendering the page (thanks Frostman)
• Added MultiScheme interface (thanks sritchie)
• Added MockTridentTuple for testing (thanks emblem)
• Add whitelist methods to Cluster to allow only a subset of hosts to be revealed as available slots
• Updated Trident Debug filter to take in an identifier to use when logging (thanks emblem)
• Number of DRPC server worker threads now customizable (thanks xiaokang)
• DRPC server now uses a bounded queue for requests to prevent being overloaded with requests (thanks xiaokang)
• Add hash method to all generated Python Thrift objects so that Python code can read Nimbus stats which use Thrift objects as dict keys
• Bug fix: Fix for bug that could cause topology to hang when ZMQ blocks sending to a worker that got reassigned
• Bug fix: Fix deadlock bug due to variant of dining philosophers problem. Spouts now use an overflow buffer to prevent blocking and guarantee that it can consume the incoming queue of acks/fails.
• Bug fix: Fix race condition in supervisor that would lead to supervisor continuously crashing due to not finding "stormconf.ser" file for an already killed topology
• Bug fix: bin/storm script now displays a helpful error message when an invalid command is specified
• Bug fix: fixed NPE when emitting during emit method of Aggregator
• Bug fix: URLs with periods in them in Storm UI now route correctly
• Bug fix: Fix occasional cascading worker crashes due when a worker dies due to not removing connections from connection cache appropriately

0.8.1

• Exposed Storm's unit testing facilities via the backtype.storm.Testing class. Notable functions are Testing/withLocalCluster and Testing/completeTopology (thanks xumingming)
• Implemented pluggable spout wait strategy that is invoked when a spout emits nothing from nextTuple or when a spout hits the MAX_SPOUT_PENDING limit
• Spouts now have a default wait strategy of a 1 millisecond sleep
• Changed log level of "Failed message" logging to DEBUG
• Deprecated LinearDRPCTopologyBuilder, TimeCacheMap, and transactional topologies
• During "storm jar", whether topology is already running or not is checked before submitting jar to save time (thanks jasonjckn)
• Added BaseMultiReducer class to Trident that provides empty implementations of prepare and cleanup
• Added Negate builtin operation to reverse a Filter
• Added topology.kryo.decorators config that allows functions to be plugged in to customize Kryo (thanks jasonjckn)
• Enable message timeouts when using LocalCluster
• Multilang subprocesses can set "need_task_ids" to false when emitting tuples to tell Storm not to send task ids back (performance optimization) (thanks barrywhart)
• Add contains method on Tuple (thanks okapies)
• Added ISchemableSpout interface
• Bug fix: When an item is consumed off an internal buffer, the entry on the buffer is nulled to allow GC to happen on that data
• Bug fix: Helper class for Trident MapStates now clear their read cache when a new commit happens, preventing updates from spilling over from a failed batch attempt to the next attempt
• Bug fix: Fix NonTransactionalMap to take in an IBackingMap for regular values rather than TransactionalValue (thanks sjoerdmulder)
• Bug fix: Fix NPE when no input fields given for regular Aggregator
• Bug fix: Fix IndexOutOfBoundsExceptions when a bolt for global aggregation had a parallelism greater than 1 (possible with splitting, stateQuerying, and multiReduce)
• Bug fix: Fix "fields size" error that would sometimes occur when splitting a stream with multiple eaches
• Bug fix: Fix bug where a committer spout (including opaque spouts) could cause Trident batches to fail
• Bug fix: Fix Trident bug where multiple groupings on same stream would cause tuples to be duplicated to all consumers
• Bug fix: Fixed error when repartitioning stream twice in a row without any operations in between
• Bug fix: Fix rare bug in supervisor where it would continuously fail to clean up workers because the worker was already partially cleaned up
• Bug fix: Fix emitDirect in storm.py

0.8.0

• Added Trident, the new high-level abstraction for intermixing high throughput, stateful stream processing with low-latency distributed querying
• Added executor abstraction between workers and tasks. Workers = processes, executors = threads that run many tasks from the same spout or bolt.
• Pluggable scheduler (thanks xumingming)
• Eliminate explicit storage of task->component in Zookeeper
• Number of workers can be dynamically changed at runtime through rebalance command and -n switch
• Number of executors for a component can be dynamically changed at runtime through rebalance command and -e switch (multiple -e switches allowed)
• Use worker heartbeats instead of task heartbeats (thanks xumingming)
• UI performance for topologies with many executors/tasks much faster due to optimized usage of Zookeeper (10x improvement)
• Added button to show/hide system stats (e.g., acker component and stream stats) from the Storm UI (thanks xumingming)
• Stats are tracked on a per-executor basis instead of per-task basis
• Major optimization for unreliable spouts and unanchored tuples (will use far less CPU)
• Revamped internals of Storm to use LMAX disruptor for internal queuing. Dramatic reductions in contention and CPU usage.
• Numerous micro-optimizations all throughout the codebase to reduce CPU usage.
• Optimized internals of Storm to use much fewer threads - two fewer threads per spout and one fewer thread per acker.
• Removed error method from task hooks (to be re-added at a later time)
• Validate that subscriptions come from valid components and streams, and if it's a field grouping that the schema is correct (thanks xumingming)
• MemoryTransactionalSpout now works in cluster mode
• Only track errors on a component by component basis to reduce the amount stored in zookeeper (to speed up UI). A side effect of this change is the removal of the task page in the UI.
• Add TOPOLOGY-TICK-TUPLE-FREQ-SECS config to have Storm automatically send "tick" tuples to a bolt's execute method coming from the __system component and __tick stream at the configured frequency. Meant to be used as a component-specific configuration.
• Upgrade Kryo to v2.17
• Tuple is now an interface and is much cleaner. The Clojure DSL helpers have been moved to TupleImpl
• Added shared worker resources. Storm provides a shared ExecutorService thread pool by default. The number of threads in the pool can be configured with topology.worker.shared.thread.pool.size
• Improve CustomStreamGrouping interface to make it more flexible by providing more information
• Enhanced INimbus interface to allow for forced schedulers and better integration with global scheduler
• Added assigned method to ISupervisor so it knows exactly what's running and not running
• Custom serializers can now have one of four constructors: (), (Kryo), (Class), or (Kryo, Class)
• Disallow ":", ".", and "" from topology names
• Errors in multilang subprocesses that go to stderr will be captured and logged to the worker logs (thanks vinodc)
• Workers detect and warn for missing outbound connections from assignment, drop messages for which there's no outbound connection
• Zookeeper connection timeout is now configurable (via storm.zookeeper.connection.timeout config)
• Storm is now less aggressive about halting process when there are Zookeeper errors, preferring to wait until client calls return exceptions.
• Can configure Zookeeper authentication for Storm's Zookeeper clients via "storm.zookeeper.auth.scheme" and "storm.zookeeper.auth.payload" configs
• Supervisors only download code for topologies assigned to them
• Include task id information in task hooks (thanks velvia)
• Use execvp to spawn daemons (replaces the python launcher process) (thanks ept)
• Expanded INimbus/ISupervisor interfaces to provide more information (used in Storm/Mesos integration)
• Bug fix: Realize task ids when worker heartbeats to supervisor. Some users were hitting deserialization problems here in very rare cases (thanks herberteuler)
• Bug fix: Fix bug where a topology's status would get corrupted to true if nimbus is restarted while status is rebalancing

0.7.4

• Bug fix: Disallow slashes in topology names since it causes Nimbus to break by affecting local filesystem and zookeeper paths
• Bug fix: Prevent slow loading tasks from causing worker timeouts by launching the heartbeat thread before tasks are loaded

0.7.3

• Changed debug level of "Failed message" logging to DEBUG
• Bug fix: Fixed critical regression in 0.7.2 that could cause workers to timeout to the supervisors or to Nimbus. 0.7.2 moved all system tasks to the same thread, so if one took a long time it would block the other critical tasks. Now different system tasks run on different threads.

0.7.2

NOTE: The change from 0.7.0 in which OutputCollector no longer assumes immutable inputs has been reverted to support optimized sending of tuples to colocated tasks

• Messages sent to colocated tasks are sent in-memory, skipping serialization (useful in conjunction with localOrShuffle grouping) (thanks xumingming)
• Upgrade to Clojure 1.4 (thanks sorenmacbeth)
• Exposed INimbus and ISupervisor interfaces for running Storm on different resource frameworks (like Mesos).
• Can override the hostname that supervisors report using "storm.local.hostname" config.
• Make request timeout within DRPC server configurable via "drpc.request.timeout.secs"
• Added "storm list" command to show running topologies at the command line (thanks xumingming)
• Storm UI displays the release version (thanks xumingming)
• Added reportError to BasicOutputCollector
• Added reportError to BatchOutputCollector
• Added close method to OpaqueTransactionalSpout coordinator
• Added "storm dev-zookeeper" command for launching a local zookeeper server. Useful for testing a one node Storm cluster locally. Zookeeper dir configured with "dev.zookeeper.path"
• Use new style classes for Python multilang adapter (thanks hellp)
• Added "storm version" command
• Heavily refactored and simplified the supervisor and worker code
• Improved error message when duplicate config files found on classpath
• Print the host and port of Nimbus when using the storm command line client
• Include as much of currently read output as possible when pipe to subprocess is broken in multilang components
• Lower supervisor worker start timeout to 120 seconds
• More debug logging in supervisor
• "nohup" no longer used by supervisor to launch workers (unnecessary)
• Throw helpful error message if StormSubmitter used without using storm client script
• Add Values class as a default serialization
• Bug fix: give absolute piddir to subprocesses (so that relative paths can be used for storm local dir)
• Bug fix: Fixed critical bug in transactional topologies where a batch would be considered successful even if the batch didn't finish
• Bug fix: Fixed critical bug in opaque transactional topologies that would lead to duplicate messages when using pipelining
• Bug fix: Workers will now die properly if a ShellBolt subprocess dies (thanks tomo)
• Bug fix: Hide the BasicOutputCollector#getOutputter method, since it shouldn't be a publicly available method
• Bug fix: Zookeeper in local mode now always gets an unused port. This will eliminate conflicts with other local mode processes or other Zookeeper instances on a local machine. (thanks xumingming)
• Bug fix: Fixed NPE in CoordinatedBolt it tuples emitted, acked, or failed for a request id that has already timed out. (thanks xumingming)
• Bug fix: UI no longer errors for topologies with no assigned tasks (thanks xumingming)
• Bug fix: emitDirect on SpoutOutputCollector now works
• Bug fix: Fixed NPE when giving null parallelism hint for spout in TransactionalTopologyBuilder (thanks xumingming)

0.7.1

• Implemented shell spout (thanks tomo)
• Shell bolts can now asynchronously emit/ack messages (thanks tomo)
• Added hooks for when a tuple is emitted, acked, or failed in bolts or spouts.
• Added activate and deactivate lifecycle methods on spouts. Spouts start off deactivated.
• Added isReady method to ITransactionalSpout$Coordinator to give the ability to delay the creation of new batches
• Generalized CustomStreamGrouping to return the target tasks rather than the indices. Also parameterized custom groupings with TopologyContext. (not backwards compatible)
• Added localOrShuffle grouping that will send to tasks in the same worker process if possible, or do a shuffle grouping otherwise.
• Removed parameter from TopologyContext#maxTopologyMessageTimeout (simplification).
• Storm now automatically sets TOPOLOGY_NAME in the config passed to the bolts and spouts to the name of the topology.
• Added TOPOLOGY_AUTO_TASK_HOOKS config to automatically add hooks into every spout/bolt for the topology.
• Added ability to override configs at the command line. These config definitions have the highest priority.
• Error thrown if invalid (not json-serializable) topology conf used.
• bin/storm script can now be symlinked (thanks gabrielgrant)
• Socket timeout for DRPCClient is now configurable
• Added getThisWorkerPort() method to TopologyContext
• Added better error checking in Fields (thanks git2samus)
• Improved Clojure DSL to allow destructuring in bolt/spout methods
• Added Nimbus stats methods to LocalCluster (thanks KasperMadsen)
• Added rebalance, activate, deactivate, and killTopologyWithOpts methods to LocalCluster
• Added custom stream groupings to LinearDRPC API
• Simplify multilang protocol to use json for all messages (thanks tomoj)
• Bug fix: Fixed string encoding in ShellBolt protocol to be UTF-8 (thanks nicoo)
• Bug fix: Fixed race condition in FeederSpout that could lead to dropped messages
• Bug fix: Quoted arguments with spaces now work properly with storm client script
• Bug fix: Workers start properly when topology name has spaces
• Bug fix: UI works properly when there are spaces in topology or spout/bolt names (thanks xiaokang)
• Bug fix: Tuple$Seq now returns correct count (thanks travisfw)

0.7.0

• Transactional topologies: a new higher level abstraction that enables exactly-once messaging semantics for most computations. Documented on the wiki.
• Component-specific configurations: Can now set configurations on a per-spout or per-bolt basis.
• New batch bolt abstraction that simplifies the processing of batches in DRPC or transactional topologies. A new batch bolt is created per batch and they are automatically cleaned up.
• Introduction of base classes for various bolt and spout types. These base classes are in the backtype.storm.topology.base package and provide empty implementations for commonly unused methods
• CoordinatedBolt generalized to handle non-linear topologies. This will make it easy to implement a non-linear DRPC topology abstraction.
• Can customize the JVM options for Storm UI with new ui.childopts config
• BigIntegers are now serializable by default
• All bolts/spouts now emit a system stream (id "__system"). Currently it only emits startup events, but may emit other events in the future.
• Optimized tuple trees for batch processing in DRPC and transactional topologies. Only the coordination tuples are anchored. OutputCollector#fail still works because CoordinatedBolt will propagate the fail to all other tuples in the batch.
• CoordinatedBolt moved to backtype.storm.coordination package
• Clojure test framework significantly more composable
• Massive internal refactorings and simplifications, including changes to the Thrift definition for storm topologies.
• Optimized acking system. Bolts with zero or more than one consumer used to send an additional ack message. Now those are no longer sent.
• Changed interface of CustomStreamGrouping to receive a List rather than a Tuple.
• Added "storm.zookeeper.retry.times" and "storm.zookeeper.retry.interval" configs (thanks killme2008)
• Added "storm help" and "storm help {cmd}" to storm script (thanks kachayev)
• Logging now always goes to logs/ in the Storm directory, regardless of where you launched the daemon (thanks haitaoyao)
• Improved Clojure DSL: can emit maps and Tuples implement the appropriate interfaces to integrate with Clojure's seq functions (thanks schleyfox)
• Added "ui.childopts" config (thanks ddillinger)
• Bug fix: OutputCollector no longer assumes immutable inputs [NOTE: this was reverted in 0.7.2 because it conflicts with sending tuples to colocated tasks without serialization]
• Bug fix: DRPC topologies now throw a proper error when no DRPC servers are configured instead of NPE (thanks danharvey)
• Bug fix: Fix local mode so multiple topologies can be run on one LocalCluster
• Bug fix: "storm supervisor" now uses supervisor.childopts instead of nimbus.childopts (thanks ddillinger)
• Bug fix: supervisor.childopts and nimbus.childopts can now contain whitespace. Previously only the first token was taken from the string
• Bug fix: Make TopologyContext "getThisTaskIndex" and "getComponentTasks" consistent
• Bug fix: Fix NoNodeException that would pop up with task heartbeating under heavy load
• Bug fix: Catch InterruptedExceptions appropriately in local mode so shutdown always works properly

0.6.2

• Automatically delete old files in Nimbus's inbox. Configurable with "nimbus.cleanup.inbox.freq.secs" and "nimbus.inbox.jar.expiration.secs"
• Redirect System.out and System.err to log4j
• Added "topology.worker.child.opts" config, for topology-configurable worker options.
• Use Netflix's Curator library for Zookeeper communication. Workers now reconnect to Zookeeper rather than crash when there's a disconnection.
• Bug fix: DRPC server no longer hangs with too many concurrent requests. DPRC server now requires two ports: "drpc.port" and "drpc.invocations.port"
• Bug fix: Multilang resources are now extracted from the relevant jar on the classpath when appropriate. Previously an error would be thrown if the resources/ dir was in a jar in local mode.
• Bug fix: Fix race condition in unit testing where time simulation fails to detect that Storm cluster is waiting due to threads that are not alive
• Bug fix: Fix deadlock in Nimbus that could be triggered by a kill command.

0.6.1

• storm client "activate" and "deactivate" commands
• storm client "rebalance" command
• Nimbus will automatically detect and cleanup corrupt topologies (this would previously give an error of the form "file storm...ser cannot be found").
• "storm" client will not run unless it's being used from a release.
• Topology jar path now passed in using a java property rather than an environment variable.
• LD_LIBRARY_PATH environment variable is now set on worker processes appropriately.
• Replaced jvyaml with snakeyaml. UTF-8 YAML files should now work properly.
• Upgraded httpclient, httpcore, and commons-codec dependencies.

0.6.0

• New serialization system based on Kryo
• Component and stream ids are now strings
• Pluggable stream groupings
• Storm now chooses an unused port for Zookeeper in local mode instead of crashing when 2181 was in use.
• Better support for defining topologies in non-JVM languages. The Thrift structure for topologies now allows you to specify components using a Java class name and a list of arguments to that class's constructor.
• Bug fix: errors during the preparation phase of spouts or bolts will be reported to the Storm UI
• Bug fix: Fixed bugs related to LinearDRPC topologies where the last bolt implements FinishedCallback
• Bug fix: String greater than 64K will now serialize properly
• Generalized type of anchors in OutputCollector methods to Collection from List.
• Improved logging throughout.
• In the "worker.childopts" config, %ID% will be replaced by the worker port.
• Significant internal refactorings to clean up the codebase.

0.5.4

• LinearDRPCTopologyBuilder, a polished DRPC implementation,
• Improved custom serialization support. no longer need to provide "token" ids.
• Fallback on Java serialization by default. Can be turned off by setting "topology.fall.back.on.java.serialization" to false.
• Improved "storm kill" command. Can override the wait time with "-w" flag.
• Display topology status in Storm UI
• Changed Thrift namespace to avoid conflicts
• Better error messages throughout
• Storm UI port is configurable through "ui.port"
• Minor improvements to Clojure DSL

0.5.3

• Nimbus and supervisor daemons can now share a local dir.
• Greatly improved Clojure DSL for creating topologies.
• Increased the default timeouts for startup of workers and tasks.
• Added the commands "localconfvalue", "remoteconfvalue", and "repl" to the storm script.
• Better error message when "storm jar" can't find the nimbus host in the configuration.

0.5.2

• No longer need any native dependencies to run Storm in local mode. Storm now uses a pure Java messaging system in local mode
• Fixed logging configurations so that logging is no longer suppressed when including the Storm release jars on the classpath in local mode.

0.5.1

• Changed ISerialization's "accept" interface to not annotate the Class with the generic type
• Made Config class implement Map and added helper methods for setting common configs

0.5.0

• Initial release!