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  1. Java Couchbase JVM Core
  2. JVMCBC-1178

Memory leak in ManagerMessageHandler

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Details

    • Bug
    • Resolution: Unresolved
    • Minor
    • 2.4.1
    • None
    • None
    • None
    • 0

    Description

      Spotted on https://sdk.jenkins.couchbase.com/view/Nightly/job/jvm/job/jvm-clients/job/couchbase-jvm-clients-scipted-build-pipeline/lastCompletedBuild/testReport/com.couchbase.client.java/KeyValueManyEndpointsTest/Cluster_testing___Linux__cbdyncluster_7_0_stable__Oracle_JDK_8____onlyOpensOneGcccpPerNode/

      14:44:20 INFO  [com.couchbase.client.core.config.loader.BaseBucketLoader:151] ensureServiceConnected NodeIdentifier{address=172.23.111.140, managerPort=8091} KV Optional[298a7350-986b-426b-92b1-99ffeb584501] state is CONNECTING
      		 
      14:44:20 INFO  [com.couchbase.client.core.config.loader.BaseBucketLoader:153] ensureServiceConnected NodeIdentifier{address=172.23.111.140, managerPort=8091} KV Optional[298a7350-986b-426b-92b1-99ffeb584501] returning CONNECTING
      		 
      14:44:20 INFO  [com.couchbase.client.core.diagnostics.WaitUntilReadyHelper:74] waitUntilReady 1 0
      		 
      14:44:20 INFO  [com.couchbase.client.core.diagnostics.WaitUntilReadyHelper:74] waitUntilReady 1 1
      		 
      14:44:20 INFO  [com.couchbase.client.core.diagnostics.WaitUntilReadyHelper:74] waitUntilReady 1 2
      		 
      14:44:20 ERROR [com.couchbase.client.core.deps.io.netty.util.ResourceLeakDetector:319] LEAK: ByteBuf.release() was not called before it's garbage-collected. See https://netty.io/wiki/reference-counted-objects.html for more information.
      		 
      Recent access records: 
      Created at:
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:403)
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:188)
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:174)
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:108)
      		 
      	com.couchbase.client.core.io.netty.manager.ManagerMessageHandler.channelActive(ManagerMessageHandler.java:101)
      		 
      	com.couchbase.client.core.io.netty.ChunkedHandlerSwitcher.activateChunkedHandler(ChunkedHandlerSwitcher.java:102)
      		 
      	com.couchbase.client.core.io.netty.ChunkedHandlerSwitcher.channelActive(ChunkedHandlerSwitcher.java:70)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:260)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:238)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:231)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelActive(CombinedChannelDuplexHandler.java:412)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.ChannelInboundHandlerAdapter.channelActive(ChannelInboundHandlerAdapter.java:69)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler.channelActive(CombinedChannelDuplexHandler.java:211)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:260)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:238)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:231)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline$HeadContext.channelActive(DefaultChannelPipeline.java:1398)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:258)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:238)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline.fireChannelActive(DefaultChannelPipeline.java:895)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.fulfillConnectPromise(AbstractEpollChannel.java:658)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.finishConnect(AbstractEpollChannel.java:691)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.epollOutReady(AbstractEpollChannel.java:567)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:489)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:397)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
      		 
      	com.couchbase.client.core.deps.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
      		 
      	java.lang.Thread.run(Thread.java:748)
      		 
      14:44:20 ERROR [com.couchbase.client.core.deps.io.netty.util.ResourceLeakDetector:319] LEAK: ByteBuf.release() was not called before it's garbage-collected. See https://netty.io/wiki/reference-counted-objects.html for more information.
      		 
      Recent access records: 
      #1:
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AdvancedLeakAwareByteBuf.readBytes(AdvancedLeakAwareByteBuf.java:497)
      		 
      	com.couchbase.client.core.io.netty.manager.ManagerMessageHandler.channelRead(ManagerMessageHandler.java:184)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
      		 
      	com.couchbase.client.core.deps.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:336)
      		 
      	com.couchbase.client.core.deps.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:308)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:800)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:499)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:397)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
      		 
      	com.couchbase.client.core.deps.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
      		 
      	java.lang.Thread.run(Thread.java:748)
      		 
      #2:
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AdvancedLeakAwareByteBuf.writeBytes(AdvancedLeakAwareByteBuf.java:593)
      		 
      	com.couchbase.client.core.io.netty.manager.ManagerMessageHandler.channelRead(ManagerMessageHandler.java:158)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
      		 
      	com.couchbase.client.core.deps.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:336)
      		 
      	com.couchbase.client.core.deps.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:308)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:800)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:499)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:397)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
      		 
      	com.couchbase.client.core.deps.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
      		 
      	java.lang.Thread.run(Thread.java:748)
      		 
      #3:
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AdvancedLeakAwareByteBuf.writeBytes(AdvancedLeakAwareByteBuf.java:593)
      		 
      	com.couchbase.client.core.io.netty.manager.ManagerMessageHandler.channelRead(ManagerMessageHandler.java:158)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
      		 
      	com.couchbase.client.core.deps.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:336)
      		 
      	com.couchbase.client.core.deps.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:323)
      		 
      	com.couchbase.client.core.deps.io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:444)
      		 
      	com.couchbase.client.core.deps.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:280)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:800)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:499)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:397)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
      		 
      	com.couchbase.client.core.deps.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
      		 
      	java.lang.Thread.run(Thread.java:748)
      		 
      Created at:
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:403)
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:188)
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:174)
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:108)
      		 
      	com.couchbase.client.core.io.netty.manager.ManagerMessageHandler.channelActive(ManagerMessageHandler.java:101)
      		 
      	com.couchbase.client.core.io.netty.ChunkedHandlerSwitcher.activateChunkedHandler(ChunkedHandlerSwitcher.java:102)
      		 
      	com.couchbase.client.core.io.netty.ChunkedHandlerSwitcher.channelActive(ChunkedHandlerSwitcher.java:70)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:260)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:238)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:231)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelActive(CombinedChannelDuplexHandler.java:412)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.ChannelInboundHandlerAdapter.channelActive(ChannelInboundHandlerAdapter.java:69)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler.channelActive(CombinedChannelDuplexHandler.java:211)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:260)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:238)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:231)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline$HeadContext.channelActive(DefaultChannelPipeline.java:1398)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:258)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:238)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline.fireChannelActive(DefaultChannelPipeline.java:895)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.fulfillConnectPromise(AbstractEpollChannel.java:658)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.finishConnect(AbstractEpollChannel.java:691)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.epollOutReady(AbstractEpollChannel.java:567)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:489)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:397)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
      		 
      	com.couchbase.client.core.deps.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
      		 
      	java.lang.Thread.run(Thread.java:748)
      		 
      : 1 leak records were discarded because they were duplicates
      		 
      14:44:20 ERROR [com.couchbase.client.core.deps.io.netty.util.ResourceLeakDetector:319] LEAK: ByteBuf.release() was not called before it's garbage-collected. See https://netty.io/wiki/reference-counted-objects.html for more information.
      		 
      Recent access records: 
      Created at:
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:403)
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:188)
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:174)
      		 
      	com.couchbase.client.core.deps.io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:108)
      		 
      	com.couchbase.client.core.io.netty.manager.ManagerMessageHandler.channelActive(ManagerMessageHandler.java:101)
      		 
      	com.couchbase.client.core.io.netty.ChunkedHandlerSwitcher.activateChunkedHandler(ChunkedHandlerSwitcher.java:102)
      		 
      	com.couchbase.client.core.io.netty.ChunkedHandlerSwitcher.channelActive(ChunkedHandlerSwitcher.java:70)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:260)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:238)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:231)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelActive(CombinedChannelDuplexHandler.java:412)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.ChannelInboundHandlerAdapter.channelActive(ChannelInboundHandlerAdapter.java:69)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.CombinedChannelDuplexHandler.channelActive(CombinedChannelDuplexHandler.java:211)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:260)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:238)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:231)
      		 
      	com.couchbase.client.core.io.netty.TrafficCaptureHandler.channelActive(TrafficCaptureHandler.java:64)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:260)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:238)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.fireChannelActive(AbstractChannelHandlerContext.java:231)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline$HeadContext.channelActive(DefaultChannelPipeline.java:1398)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:258)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.AbstractChannelHandlerContext.invokeChannelActive(AbstractChannelHandlerContext.java:238)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.DefaultChannelPipeline.fireChannelActive(DefaultChannelPipeline.java:895)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.fulfillConnectPromise(AbstractEpollChannel.java:658)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.finishConnect(AbstractEpollChannel.java:691)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe.epollOutReady(AbstractEpollChannel.java:567)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:489)
      		 
      	com.couchbase.client.core.deps.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:397)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
      		 
      	com.couchbase.client.core.deps.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
      		 
      	com.couchbase.client.core.deps.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
      		 
      	java.lang.Thread.run(Thread.java:748)
      		 
      14:44:20 INFO  [com.couchbase.client.core.diagnostics.WaitUntilReadyHelper:74] waitUntilReady 1 3
      		 
      14:44:20 INFO  [com.couchbase.client.core.diagnostics.WaitUntilReadyHelper:74] waitUntilReady 1 4

      So it's the currentContent field in ManagedMessageHandler.  This is allocated in channelActive and deallocated in channelInactive.

      Seems to be a one-off - after weeks of going through CI logs this is the first I've seen it - so marking as Minor.

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            david.nault David Nault
            graham.pople Graham Pople
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              PagerDuty