[infinispan-issues] [JBoss JIRA] (ISPN-8933) NullPointerException in StreamResponseCommand

[William Burns (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-8933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13544798#comment-13544798 ] 

William Burns commented on ISPN-8933:
-------------------------------------

I can see why this is happening. This is because the LocalStreamManagerImpl returns a null value when the cache is shutting down [1]. We should probably change the response handle on the caller side to ignore any value if all segments were suspected as they would have been in this case.

[1] https://github.com/infinispan/infinispan/blob/master/core/src/main/java/org/infinispan/stream/impl/LocalStreamManagerImpl.java#L394

> NullPointerException in StreamResponseCommand
> ---------------------------------------------
>
>                 Key: ISPN-8933
>                 URL: https://issues.jboss.org/browse/ISPN-8933
>             Project: Infinispan
>          Issue Type: Bug
>            Reporter: Pedro Ruivo
>
> {{Cache.isEmpty()}} can fail with timeout with concurrent rebalance.
> {code:java}
> 2018-03-12 11:48:45,699 ERROR (testng-RemoveCounterTest) [org.infinispan.commons.test.TestSuiteProgress] Test failed: org.infinispan.counter.RemoveCounterTest.testCounterManagerNonExistingRemoveWithBounded
> org.infinispan.util.concurrent.TimeoutException: null
>         at org.infinispan.stream.impl.AbstractCacheStream.performOperationRehashAware(AbstractCacheStream.java:298) ~[infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at org.infinispan.stream.impl.AbstractCacheStream.performOperation(AbstractCacheStream.java:218) ~[infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at org.infinispan.stream.impl.DistributedCacheStream.anyMatch(DistributedCacheStream.java:414) ~[infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at org.infinispan.cache.impl.CacheImpl.isEmpty(CacheImpl.java:438) ~[infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at org.infinispan.cache.impl.CacheImpl.isEmpty(CacheImpl.java:434) ~[infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
> {code}
> There is a {{NullPointerException}} in {{StreamResponseCommand}} that may be related.
> {code:java}
> 2018-03-12 11:48:30,698 WARN  (remote-thread-RemoveCounterTest-NodeA-p10-t4) [org.infinispan.remoting.inboundhandler.TrianglePerCacheInboundInvocationHandler] ISPN000071: Caught exception when handling command StreamResponseCommand{id=RemoveCounterTest-NodeA-6448335, complete=true, response=null}
> java.lang.NullPointerException: null
>         at org.infinispan.stream.impl.DistributedCacheStream.lambda$anyMatch$4(DistributedCacheStream.java:414) ~[infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at org.infinispan.stream.impl.ClusterStreamManagerImpl$RequestTracker.lastResult(ClusterStreamManagerImpl.java:707) ~[infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at org.infinispan.stream.impl.ClusterStreamManagerImpl.receiveResponse(ClusterStreamManagerImpl.java:410) ~[infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at org.infinispan.stream.impl.StreamSegmentResponseCommand.invokeAsync(StreamSegmentResponseCommand.java:39) ~[infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at org.infinispan.remoting.inboundhandler.BasePerCacheInboundInvocationHandler.invokeCommand(BasePerCacheInboundInvocationHandler.java:94) ~[infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at org.infinispan.remoting.inboundhandler.BaseBlockingRunnable.invoke(BaseBlockingRunnable.java:99) [infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at org.infinispan.remoting.inboundhandler.BaseBlockingRunnable.runAsync(BaseBlockingRunnable.java:71) [infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at org.infinispan.remoting.inboundhandler.BaseBlockingRunnable.run(BaseBlockingRunnable.java:40) [infinispan-core-9.2.1-SNAPSHOT.jar:9.2.1-SNAPSHOT]
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_152]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_152]
>         at java.lang.Thread.run(Thread.java:748) [?:1.8.0_152]
> {code}
> Causes failures in 
> {noformat}
> RemoveCounterTest.testCounterManagerNonExistingRemoveWithBounded()
> {noformat}



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