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https://issues.apache.org/jira/browse/HBASE-26708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17551703#comment-17551703
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Josh Elser commented on HBASE-26708:
------------------------------------
{quote}Any luck with reproducing this on test clusters
{quote}
No, sadly, but we did have another report of it against HBase 2.2ish.
{quote}Does increase MaxDirectMemorySize can solve the problem?
{quote}
In my experience, no. It has crept up constantly to whatever limit we've met in
cases where a user is hitting it. I think we saw this going up to 50G, but, I
know we were also not running against the latest from 2.2.x so I can't say we
weren't hitting already-fixed bugs.
{quote}And what I mean is do you only hit this problem when sasl authentication
is enabled? This is also an important information, as we will setup more netty
handlers when sasl is enabled, which may not be covered too much in our tests.
{quote}
SASL has been enabled in the cases we've seen it (users I talk to are rarely
running without security on these days).
> Netty "leak detected" and OutOfDirectMemoryError due to direct memory
> buffering
> -------------------------------------------------------------------------------
>
> Key: HBASE-26708
> URL: https://issues.apache.org/jira/browse/HBASE-26708
> Project: HBase
> Issue Type: Bug
> Components: rpc
> Affects Versions: 2.5.0, 2.4.6
> Reporter: Viraj Jasani
> Priority: Major
>
> Under constant data ingestion, using default Netty based RpcServer and
> RpcClient implementation results in OutOfDirectMemoryError, supposedly caused
> by leaks detected by Netty's LeakDetector.
> {code:java}
> 2022-01-25 17:03:10,084 ERROR [S-EventLoopGroup-1-3]
> util.ResourceLeakDetector - java:115)
>
> org.apache.hbase.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.expandCumulation(ByteToMessageDecoder.java:538)
>
> org.apache.hbase.thirdparty.io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:97)
>
> org.apache.hbase.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:274)
>
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
>
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
>
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
>
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
>
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
>
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
>
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
>
> org.apache.hbase.thirdparty.io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:795)
>
> org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:480)
>
> org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)
>
> org.apache.hbase.thirdparty.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
>
> org.apache.hbase.thirdparty.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
>
> org.apache.hbase.thirdparty.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> java.lang.Thread.run(Thread.java:748)
> {code}
> {code:java}
> 2022-01-25 17:03:14,014 ERROR [S-EventLoopGroup-1-3]
> util.ResourceLeakDetector -
> apache.hbase.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:507)
>
> org.apache.hbase.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:446)
>
> org.apache.hbase.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:276)
>
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
>
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
>
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
>
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
>
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
>
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
>
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
>
> org.apache.hbase.thirdparty.io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:795)
>
> org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:480)
>
> org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)
>
> org.apache.hbase.thirdparty.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
>
> org.apache.hbase.thirdparty.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
>
> org.apache.hbase.thirdparty.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> java.lang.Thread.run(Thread.java:748)
> {code}
> And finally handlers are removed from the pipeline due to
> OutOfDirectMemoryError:
> {code:java}
> 2022-01-25 17:36:28,657 WARN [S-EventLoopGroup-1-5]
> channel.DefaultChannelPipeline - An exceptionCaught() event was fired, and it
> reached at the tail of the pipeline. It usually means the last handler in the
> pipeline did not handle the exception.
> org.apache.hbase.thirdparty.io.netty.channel.ChannelPipelineException:
> org.apache.hadoop.hbase.security.NettyHBaseSaslRpcClientHandler.handlerAdded()
> has thrown an exception; removed.
> at
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline.callHandlerAdded0(DefaultChannelPipeline.java:624)
> at
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline.addFirst(DefaultChannelPipeline.java:181)
> at
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline.addFirst(DefaultChannelPipeline.java:358)
> at
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline.addFirst(DefaultChannelPipeline.java:339)
> at
> org.apache.hadoop.hbase.ipc.NettyRpcConnection.saslNegotiate(NettyRpcConnection.java:229)
> at
> org.apache.hadoop.hbase.ipc.NettyRpcConnection.access$600(NettyRpcConnection.java:79)
> at
> org.apache.hadoop.hbase.ipc.NettyRpcConnection$2.operationComplete(NettyRpcConnection.java:312)
> at
> org.apache.hadoop.hbase.ipc.NettyRpcConnection$2.operationComplete(NettyRpcConnection.java:300)
> at
> org.apache.hbase.thirdparty.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:578)
> at
> org.apache.hbase.thirdparty.io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:571)
> at
> org.apache.hbase.thirdparty.io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:550)
> at
> org.apache.hbase.thirdparty.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:491)
> at
> org.apache.hbase.thirdparty.io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:616)
> at
> org.apache.hbase.thirdparty.io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromise.java:605)
> at
> org.apache.hbase.thirdparty.io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)
> at
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:84)
> at
> org.apache.hbase.thirdparty.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.fulfillConnectPromise(AbstractEpollChannel.java:653)
> at
> org.apache.hbase.thirdparty.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.finishConnect(AbstractEpollChannel.java:691)
> at
> org.apache.hbase.thirdparty.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.epollOutReady(AbstractEpollChannel.java:567)
> at
> org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:470)
> at
> org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)
> at
> org.apache.hbase.thirdparty.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
> at
> org.apache.hbase.thirdparty.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at
> org.apache.hbase.thirdparty.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.lang.Thread.run(Thread.java:748)
> Caused by:
> org.apache.hbase.thirdparty.io.netty.util.internal.OutOfDirectMemoryError:
> failed to allocate 16777216 byte(s) of direct memory (used: 33269220801, max:
> 33285996544)
> at
> org.apache.hbase.thirdparty.io.netty.util.internal.PlatformDependent.incrementMemoryCounter(PlatformDependent.java:802)
> at
> org.apache.hbase.thirdparty.io.netty.util.internal.PlatformDependent.allocateDirectNoCleaner(PlatformDependent.java:731)
> at
> org.apache.hbase.thirdparty.io.netty.buffer.PoolArena$DirectArena.allocateDirect(PoolArena.java:632)
> at
> org.apache.hbase.thirdparty.io.netty.buffer.PoolArena$DirectArena.newChunk(PoolArena.java:607)
> at
> org.apache.hbase.thirdparty.io.netty.buffer.PoolArena.allocateNormal(PoolArena.java:202)
> at
> org.apache.hbase.thirdparty.io.netty.buffer.PoolArena.tcacheAllocateSmall(PoolArena.java:172)
> at
> org.apache.hbase.thirdparty.io.netty.buffer.PoolArena.allocate(PoolArena.java:134)
> at
> org.apache.hbase.thirdparty.io.netty.buffer.PoolArena.allocate(PoolArena.java:126)
> at
> org.apache.hbase.thirdparty.io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:395)
> at
> org.apache.hbase.thirdparty.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:187)
> at
> org.apache.hbase.thirdparty.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:178)
> at
> org.apache.hbase.thirdparty.io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:115)
> at
> org.apache.hadoop.hbase.security.NettyHBaseSaslRpcClientHandler.writeResponse(NettyHBaseSaslRpcClientHandler.java:79)
> at
> org.apache.hadoop.hbase.security.NettyHBaseSaslRpcClientHandler.handlerAdded(NettyHBaseSaslRpcClientHandler.java:115)
> at
> org.apache.hbase.thirdparty.io.netty.channel.AbstractChannelHandlerContext.callHandlerAdded(AbstractChannelHandlerContext.java:938)
> at
> org.apache.hbase.thirdparty.io.netty.channel.DefaultChannelPipeline.callHandlerAdded0(DefaultChannelPipeline.java:609)
> ... 24 more
> {code}
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