Error when starting up the server after an unable to serialize exception

[SerialVelocity]

Hey,

I created a server that registered an onElection event that tried to store a type that wasn't serializable.

After trying to start it twice, I then removed that type. Then I tried to start the server and got:

Exception in thread "main" java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: offset cannot be less than or equal to the last offset in the index
	at java.util.concurrent.CompletableFuture.reportJoin(CompletableFuture.java:375)
	at java.util.concurrent.CompletableFuture.join(CompletableFuture.java:1934)
	at io.atomix.copycat.server.state.ServerContext.<init>(ServerContext.java:99)
	at io.atomix.copycat.server.CopycatServer$Builder.build(CopycatServer.java:1054)
	at io.atomix.AtomixReplica$Builder.build(AtomixReplica.java:904)
	at com.palantir.atlasdb.timelock.TimeLockServer.run(TimeLockServer.java:56)
	at com.palantir.atlasdb.timelock.TimeLockServer.run(TimeLockServer.java:43)
	at io.dropwizard.cli.EnvironmentCommand.run(EnvironmentCommand.java:40)
	at io.dropwizard.cli.ConfiguredCommand.run(ConfiguredCommand.java:77)
	at io.dropwizard.cli.Cli.run(Cli.java:70)
	at io.dropwizard.Application.run(Application.java:80)
	at com.palantir.atlasdb.timelock.TimeLockServer.main(TimeLockServer.java:45)
Caused by: java.lang.IllegalArgumentException: offset cannot be less than or equal to the last offset in the index
	at io.atomix.catalyst.util.Assert.arg(Assert.java:15)
	at io.atomix.catalyst.util.Assert.arg(Assert.java:22)
	at io.atomix.catalyst.util.Assert.argNot(Assert.java:37)
	at io.atomix.copycat.server.storage.index.SequentialOffsetIndex.index(SequentialOffsetIndex.java:49)
	at io.atomix.copycat.server.storage.index.DelegatingOffsetIndex.index(DelegatingOffsetIndex.java:39)
	at io.atomix.copycat.server.storage.Segment.<init>(Segment.java:91)
	at io.atomix.copycat.server.storage.SegmentManager.loadDiskSegment(SegmentManager.java:364)
	at io.atomix.copycat.server.storage.SegmentManager.loadSegment(SegmentManager.java:351)
	at io.atomix.copycat.server.storage.SegmentManager.loadSegments(SegmentManager.java:424)
	at io.atomix.copycat.server.storage.SegmentManager.open(SegmentManager.java:100)
	at io.atomix.copycat.server.storage.SegmentManager.<init>(SegmentManager.java:63)
	at io.atomix.copycat.server.storage.Log.<init>(Log.java:130)
	at io.atomix.copycat.server.storage.Storage.openLog(Storage.java:318)
	at io.atomix.copycat.server.state.ServerContext.reset(ServerContext.java:474)
	at io.atomix.catalyst.concurrent.ThreadContext.lambda$execute$1(ThreadContext.java:151)
	at io.atomix.catalyst.concurrent.Runnables.lambda$logFailure$2(Runnables.java:20)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

This was with a single node cluster.