Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Possible worker memory leak (netty)

See original GitHub issue

Alluxio Version: 2.6.1

Describe the bug Memory leak detector found a leak

To Reproduce

Recent access records:
Created at:
        io.netty.buffer.AbstractByteBufAllocator.compositeDirectBuffer(AbstractByteBufAllocator.java:223)
        io.netty.buffer.AbstractByteBufAllocator.compositeDirectBuffer(AbstractByteBufAllocator.java:218)
        io.netty.buffer.AbstractByteBufAllocator.compositeBuffer(AbstractByteBufAllocator.java:193)
        alluxio.grpc.GrpcSerializationUtils.getByteBufFromReadableBuffer(GrpcSerializationUtils.java:153)
        alluxio.grpc.WriteRequestMarshaller.deserialize(WriteRequestMarshaller.java:91)
        alluxio.grpc.WriteRequestMarshaller.deserialize(WriteRequestMarshaller.java:35)
        alluxio.grpc.DataMessageMarshaller.parse(DataMessageMarshaller.java:63)
        io.grpc.MethodDescriptor.parseRequest(MethodDescriptor.java:307)
        io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.messagesAvailableInternal(ServerCallImpl.java:309)
        io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.messagesAvailable(ServerCallImpl.java:292)
        io.grpc.internal.ServerImpl$JumpToApplicationThreadServerStreamListener$1MessagesAvailable.runInContext(ServerImpl.java:765)
        io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
        io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123)
        java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        java.lang.Thread.run(Thread.java:748)
2021-08-26 01:41:56,381 ERROR ResourceLeakDetector - 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:
        io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:385)
        io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:187)
        io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:178)
        io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:115)
        io.netty.handler.codec.ByteToMessageDecoder.expandCumulation(ByteToMessageDecoder.java:532)
        io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:97)
        io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:274)
        io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
        io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
        io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
        io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:795)
        io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:475)
        io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)

Expected behavior No leak Urgency Blocker

Additional context Add any other context about the problem here.