How Do You Get Indexes In JanusGraph-Cassandra With Java? #3774
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ProblemHow are you supposed to make vertex indexes when writing in Java? Exception in thread "main" java.lang.IllegalArgumentException: Update action [ENABLE_INDEX] cannot be invoked for index with status [INSTALLED]
at org.janusgraph.core.schema.SchemaAction.isApplicableStatus(SchemaAction.java:85)
at org.janusgraph.graphdb.database.management.ManagementSystem.updateIndex(ManagementSystem.java:864)
at org.janusgraph.graphdb.database.management.ManagementSystem.updateIndex(ManagementSystem.java:845)
at Test12.main(Test12.java:39) janusGraphManagement.buildIndex("_id", Vertex.class).addKey(propertyKey).buildCompositeIndex();DisclaimerPlease know that before you read the rest of this -> I know that:
My mind has been greatly exercised with unfamiliar terms, uncertain avenues to test, and defending my right to learn and ask questions. I don't claim to be smart about this or that I don't (mis)understand things; I could just use some help. How do you create an index for a large-volume sparse-dataset load? Research(I think) I know:
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Test12
2023-05-12 12:00:28,191 [INFO] [c.d.o.d.i.c.ContactPoints.main] :: Contact point localhost:9042 resolves to multiple addresses, will use them all ([localhost/127.0.0.1, localhost/0:0:0:0:0:0:0:1])
2023-05-12 12:00:28,321 [INFO] [c.d.o.d.i.c.DefaultMavenCoordinates.main] :: DataStax Java driver for Apache Cassandra(R) (com.datastax.oss:java-driver-core) version 4.15.0
2023-05-12 12:00:29,035 [INFO] [c.d.o.d.i.c.t.Clock.JanusGraph Session-admin-0] :: Using native clock for microsecond precision
2023-05-12 12:00:29,392 [WARN] [c.d.o.d.i.c.l.h.OptionalLocalDcHelper.JanusGraph Session-admin-0] :: [JanusGraph Session|default] You specified datacenter1 as the local DC, but some contact points are from a different DC: Node(endPoint=localhost/[0:0:0:0:0:0:0:1]:9042, hostId=null, hashCode=4e657eb1)=null; please provide the correct local DC, or check your contact points
2023-05-12 12:00:29,646 [INFO] [o.j.g.i.UniqueInstanceIdRetriever.main] :: Generated unique-instance-id=c0a8563c17468-rmt-lap-win201
2023-05-12 12:00:29,664 [INFO] [c.d.o.d.i.c.ContactPoints.main] :: Contact point localhost:9042 resolves to multiple addresses, will use them all ([localhost/127.0.0.1, localhost/0:0:0:0:0:0:0:1])
2023-05-12 12:00:29,700 [INFO] [c.d.o.d.i.c.t.Clock.JanusGraph Session-admin-0] :: Using native clock for microsecond precision
2023-05-12 12:00:29,752 [WARN] [c.d.o.d.i.c.l.h.OptionalLocalDcHelper.JanusGraph Session-admin-0] :: [JanusGraph Session|default] You specified datacenter1 as the local DC, but some contact points are from a different DC: Node(endPoint=localhost/127.0.0.1:9042, hostId=null, hashCode=2d899a6d)=null; please provide the correct local DC, or check your contact points
2023-05-12 12:00:29,771 [INFO] [o.j.d.c.ExecutorServiceBuilder.main] :: Initiated fixed thread pool of size 40
2023-05-12 12:00:29,889 [INFO] [o.j.g.d.StandardJanusGraph.main] :: Gremlin script evaluation is disabled
2023-05-12 12:00:29,916 [INFO] [o.j.d.l.k.KCVSLog.main] :: Loaded unidentified ReadMarker start time 2023-05-12T17:00:29.916639Z into org.janusgraph.diskstorage.log.kcvs.KCVSLog$MessagePuller@48b4a043
2023-05-12 12:00:29,976 [WARN] [o.j.g.t.StandardJanusGraphTx.main] :: Query requires iterating over all vertices [[]]. For better performance, use indexes
2023-05-12 12:00:30,203 [WARN] [o.j.g.t.StandardJanusGraphTx.main] :: Query requires iterating over all vertices [[]]. For better performance, use indexes
2023-05-12 12:00:30,207 [INFO] [Main.main] :: drop g.V().count().next(): 0
2023-05-12 12:00:30,947 [WARN] [o.j.g.t.StandardJanusGraphTx.main] :: Query requires iterating over all vertices [[]]. For better performance, use indexes
2023-05-12 12:00:30,950 [INFO] [Main.main] :: addVertex g.V().count().next(): 1
2023-05-12 12:00:31,328 [WARN] [o.j.g.t.StandardJanusGraphTx.main] :: Query requires iterating over all vertices [[]]. For better performance, use indexes
2023-05-12 12:00:31,332 [INFO] [Main.main] :: buildIndex g.V().count().next(): 1
2023-05-12 12:00:31,336 [WARN] [o.j.g.t.StandardJanusGraphTx.main] :: Query requires iterating over all vertices [[]]. For better performance, use indexes
2023-05-12 12:00:31,341 [INFO] [Main.main] :: updateIndex g.V().count().next(): 1
Exception in thread "main" java.lang.IllegalArgumentException: Update action [ENABLE_INDEX] cannot be invoked for index with status [INSTALLED]
at org.janusgraph.core.schema.SchemaAction.isApplicableStatus(SchemaAction.java:85)
at org.janusgraph.graphdb.database.management.ManagementSystem.updateIndex(ManagementSystem.java:864)
at org.janusgraph.graphdb.database.management.ManagementSystem.updateIndex(ManagementSystem.java:845)
at Test12.main(Test12.java:39)
Process finished with exit code 130Codeimport org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.janusgraph.core.JanusGraph;
import org.janusgraph.core.JanusGraphFactory;
import org.janusgraph.core.JanusGraphVertex;
import org.janusgraph.core.PropertyKey;
import org.janusgraph.core.schema.JanusGraphManagement;
import org.janusgraph.core.schema.SchemaAction;
import org.janusgraph.graphdb.database.management.ManagementSystem;
import java.util.concurrent.ExecutionException;
public class Test12 {
private static final Logger logger = LogManager.getLogger(Main.class);
public static void main(String[] args) throws InterruptedException, ExecutionException {
JanusGraph janusGraph = JanusGraphFactory.build().set("storage.backend", "cql").set("storage.hostname", "localhost:9042").open();
GraphTraversalSource g = janusGraph.traversal();
g.V().drop().iterate();
janusGraph.tx().commit();
janusGraph.tx().open();
logger.info("drop g.V().count().next():\t" + g.V().count().next());
JanusGraphVertex vertex = janusGraph.addVertex("entity");
vertex.property("_id", "Test1");
janusGraph.tx().commit();
janusGraph.tx().open();
logger.info("addVertex g.V().count().next():\t" + g.V().count().next());
JanusGraphManagement janusGraphManagement = janusGraph.openManagement();
PropertyKey propertyKey = janusGraphManagement.getOrCreatePropertyKey("_id");
janusGraphManagement.buildIndex("_id", Vertex.class).addKey(propertyKey).buildCompositeIndex();
janusGraph.tx().commit();
janusGraph.tx().open();
logger.info("buildIndex g.V().count().next():\t" + g.V().count().next());
janusGraphManagement.updateIndex(janusGraphManagement.getGraphIndex("_id"), SchemaAction.REGISTER_INDEX).get();
janusGraph.tx().commit();
janusGraph.tx().open();
logger.info("updateIndex g.V().count().next():\t" + g.V().count().next());
janusGraphManagement.updateIndex(janusGraphManagement.getGraphIndex("_id"), SchemaAction.ENABLE_INDEX).get();
janusGraph.tx().commit();
janusGraph.tx().open();
logger.info("updateIndex g.V().count().next():\t" + g.V().count().next());
ManagementSystem.awaitGraphIndexStatus(janusGraph, "_id").call();
logger.info("awaitGraphIndexStatus g.V().count().next():\t" + g.V().count().next());
janusGraph.close();
}
}ReproductionThis execution is running with: Java-17, Maven-3, and CQL (Cassandra Query Language). OldException in thread "main" java.lang.NullPointerException: Cannot invoke "org.janusgraph.core.schema.JanusGraphIndex.getFieldKeys()" because "idx" is null
at org.janusgraph.graphdb.database.management.GraphIndexStatusWatcher.call(GraphIndexStatusWatcher.java:67)
at Test12.main(Test12.java:35) |
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Answered by
ZachMurray
May 17, 2023
Replies: 1 comment
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|
https://stackoverflow.com/questions/76239053/building-janusgraph-indexes-on-cassandra-in-java |
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https://stackoverflow.com/questions/76239053/building-janusgraph-indexes-on-cassandra-in-java