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From "Thomas Weise (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-5397) Flink portable runner GRPC cleanup failure after user class loader was removed
Date Mon, 17 Sep 2018 12:00:00 GMT

    [ https://issues.apache.org/jira/browse/BEAM-5397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16617416#comment-16617416
] 

Thomas Weise commented on BEAM-5397:
------------------------------------

{code:java}
Exception in thread "grpc-default-worker-ELG-3-2" java.lang.NoClassDefFoundError: org/apache/beam/vendor/netty/v4/io/netty/buffer/PoolArena$1
	at org.apache.beam.vendor.netty.v4.io.netty.buffer.PoolArena.freeChunk(PoolArena.java:293)
	at org.apache.beam.vendor.netty.v4.io.netty.buffer.PoolThreadCache$MemoryRegionCache.freeEntry(PoolThreadCache.java:443)
	at org.apache.beam.vendor.netty.v4.io.netty.buffer.PoolThreadCache$MemoryRegionCache.free(PoolThreadCache.java:413)
	at org.apache.beam.vendor.netty.v4.io.netty.buffer.PoolThreadCache$MemoryRegionCache.free(PoolThreadCache.java:405)
	at org.apache.beam.vendor.netty.v4.io.netty.buffer.PoolThreadCache.free(PoolThreadCache.java:262)
	at org.apache.beam.vendor.netty.v4.io.netty.buffer.PoolThreadCache.free(PoolThreadCache.java:253)
	at org.apache.beam.vendor.netty.v4.io.netty.buffer.PoolThreadCache.free(PoolThreadCache.java:226)
	at org.apache.beam.vendor.netty.v4.io.netty.buffer.PooledByteBufAllocator$PoolThreadLocalCache.onRemoval(PooledByteBufAllocator.java:450)
	at org.apache.beam.vendor.netty.v4.io.netty.buffer.PooledByteBufAllocator$PoolThreadLocalCache.onRemoval(PooledByteBufAllocator.java:426)
	at org.apache.beam.vendor.netty.v4.io.netty.util.concurrent.FastThreadLocal.remove(FastThreadLocal.java:269)
	at org.apache.beam.vendor.netty.v4.io.netty.util.concurrent.FastThreadLocal.removeAll(FastThreadLocal.java:68)
	at org.apache.beam.vendor.netty.v4.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:32)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: org.apache.beam.vendor.netty.v4.io.netty.buffer.PoolArena$1
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at org.apache.flink.runtime.execution.librarycache.FlinkUserCodeClassLoaders$ChildFirstClassLoader.loadClass(FlinkUserCodeClassLoaders.java:129)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 13 more{code}

> Flink portable runner GRPC cleanup failure after user class loader was removed
> ------------------------------------------------------------------------------
>
>                 Key: BEAM-5397
>                 URL: https://issues.apache.org/jira/browse/BEAM-5397
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-flink
>    Affects Versions: 2.8.0
>            Reporter: Thomas Weise
>            Priority: Major
>              Labels: portability
>
> Looks like another attempt to perform cleanup after close.



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