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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-18971) Netty issue may cause the shuffle client hang
Date Mon, 02 Oct 2017 18:35:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-18971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Owen updated SPARK-18971:
------------------------------
    Fix Version/s: 2.1.3

> Netty issue may cause the shuffle client hang
> ---------------------------------------------
>
>                 Key: SPARK-18971
>                 URL: https://issues.apache.org/jira/browse/SPARK-18971
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>            Reporter: Shixiong Zhu
>            Assignee: Shixiong Zhu
>            Priority: Minor
>             Fix For: 2.2.0, 2.1.3
>
>
> Check https://github.com/netty/netty/issues/6153 for details
> You should be able to see the following similar stack track in the executor thread dump.
> {code}
> "shuffle-client-7-4" daemon prio=5 tid=97 RUNNABLE
>         at io.netty.util.Recycler$Stack.scavengeSome(Recycler.java:504)
>         at io.netty.util.Recycler$Stack.scavenge(Recycler.java:454)
>         at io.netty.util.Recycler$Stack.pop(Recycler.java:435)
>         at io.netty.util.Recycler.get(Recycler.java:144)
>         at io.netty.buffer.PooledUnsafeDirectByteBuf.newInstance(PooledUnsafeDirectByteBuf.java:39)
>         at io.netty.buffer.PoolArena$DirectArena.newByteBuf(PoolArena.java:727)
>         at io.netty.buffer.PoolArena.allocate(PoolArena.java:140)
>         at io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:271)
>         at io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:177)
>         at io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:168)
>         at io.netty.buffer.AbstractByteBufAllocator.ioBuffer(AbstractByteBufAllocator.java:129)
>         at io.netty.channel.AdaptiveRecvByteBufAllocator$HandleImpl.allocate(AdaptiveRecvByteBufAllocator.java:104)
>         at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:117)
>         at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:652)
>         at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:575)
>         at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:489)
>         at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:451)
>         at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:140)
>         at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
>         at java.lang.Thread.run(Thread.java:745)
> {code}



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