[SPARK-18971] Netty issue may cause the shuffle client hang

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.1.2, 2.1.3, 2.2.0
• Component/s: Spark Core
• Assignee: Shixiong Zhu
• Reporter: Shixiong Zhu
• Created: 22/Dec/16 02:05
• Updated: 03/Oct/17 06:10
• Resolved: 15/Jan/17 11:15

Description

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.

"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)

Issue Links

• is duplicated by: SPARK-19300 Executor is waiting for lock
• is duplicated by: SPARK-19883 Executor is waiting for lock
• links to: [Github] Pull Request #16568 (zsxwing)