[jira] [Commented] (KAFKA-10616) StreamThread killed by "IllegalStateException: The processor is already closed"

["Sagar Rao (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-10616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17217208#comment-17217208 ] 

Sagar Rao commented on KAFKA-10616:
-----------------------------------

hey [~ableegoldman], Can I take this one up?

> StreamThread killed by "IllegalStateException: The processor is already closed"
> -------------------------------------------------------------------------------
>
>                 Key: KAFKA-10616
>                 URL: https://issues.apache.org/jira/browse/KAFKA-10616
>             Project: Kafka
>          Issue Type: Bug
>          Components: streams
>            Reporter: A. Sophie Blee-Goldman
>            Priority: Blocker
>             Fix For: 2.7.0
>
>
> Application is hitting "java.lang.IllegalStateException: The processor is already closed". Over the course of about a day, this exception killed 21/100 of the queries (StreamThreads). The (slightly trimmed) stacktrace:
>  
> {code:java}
> java.lang.RuntimeException: Caught an exception while closing caching window store for store Aggregate-Aggregate-Materialize at org.apache.kafka.streams.state.internals.ExceptionUtils.throwSuppressed(ExceptionUtils.java:39) at org.apache.kafka.streams.state.internals.CachingWindowStore.close(CachingWindowStore.java:432) at org.apache.kafka.streams.processor.internals.ProcessorStateManager.close(ProcessorStateManager.java:527) at org.apache.kafka.streams.processor.internals.StreamTask.closeDirty(StreamTask.java:499) at org.apache.kafka.streams.processor.internals.TaskManager.handleLostAll(TaskManager.java:626) … Caused by: java.lang.IllegalStateException: The processor is already closed at org.apache.kafka.streams.processor.internals.ProcessorNode.throwIfClosed(ProcessorNode.java:172) at org.apache.kafka.streams.processor.internals.ProcessorNode.process(ProcessorNode.java:178) at org.apache.kafka.streams.processor.internals.ProcessorContextImpl.forwardInternal(ProcessorContextImpl.java:273) at org.apache.kafka.streams.processor.internals.ProcessorContextImpl.forward(ProcessorContextImpl.java:252) at org.apache.kafka.streams.processor.internals.ProcessorContextImpl.forward(ProcessorContextImpl.java:214) at org.apache.kafka.streams.kstream.internals.TimestampedCacheFlushListener.apply(TimestampedCacheFlushListener.java:45) at org.apache.kafka.streams.kstream.internals.TimestampedCacheFlushListener.apply(TimestampedCacheFlushListener.java:28) at org.apache.kafka.streams.state.internals.MeteredWindowStore.lambda$setFlushListener$1(MeteredWindowStore.java:110) at org.apache.kafka.streams.state.internals.CachingWindowStore.putAndMaybeForward(CachingWindowStore.java:118) at org.apache.kafka.streams.state.internals.CachingWindowStore.lambda$initInternal$0(CachingWindowStore.java:93) at org.apache.kafka.streams.state.internals.NamedCache.flush(NamedCache.java:151) at org.apache.kafka.streams.state.internals.NamedCache.flush(NamedCache.java:109) at org.apache.kafka.streams.state.internals.ThreadCache.flush(ThreadCache.java:116) at org.apache.kafka.streams.state.internals.CachingWindowStore.lambda$close$1(CachingWindowStore.java:427) at org.apache.kafka.streams.state.internals.ExceptionUtils.executeAll(ExceptionUtils.java:28) at org.apache.kafka.streams.state.internals.CachingWindowStore.close(CachingWindowStore.java:426)
> {code}
>  
> I'm guessing we close the topology before closing the state states, so records that get flushed during the caching store's close() will run into an already-closed processor. During a clean close we should always flush before closing anything (during prepareCommit()), but since this was a handleLostAll() we would just skip right to suspend() and close the topology.
> Presumably the right thing to do here is to flush the caches before closing anything during a dirty close.



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