Yeah, I use DistributedMapCacheServer for a Wait / Notify flow.

Regards,

Rafael

On Tue, Dec 26, 2023 at 4:45 PM Matt Burgess <mattyb...@apache.org> wrote:

> It looks like we need to call release() from some place(s) where we
> don't currently. HBase had the same issues [1]. We use this in the
> StandardMapCacheServer and ListenBeats, are you using either, neither,
> or both?
>
> Regards,
> Matt
>
> [1] https://github.com/netty/netty/issues/12549
>
> On Tue, Dec 26, 2023 at 8:53 AM Rafael Fracasso
> <rafaelfraca...@gmail.com> wrote:
> >
> > Hi,
> >
> > sometimes I have these ResourceLeakDetector exceptions on my
> nifi-app.log, you guys know the reason this exception was raised and how I
> avoid them to happen?
> >
> > Thanks
> >
> > Rafael
> >
> >
> >
> > 2023-12-26 09:02:15,353 ERROR [nioEventLoopGroup-3-6]
> io.netty.util.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:403)
> >
> >
> io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:188)
> >
> >
> io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:124)
> >
> > io.netty.buffer.AbstractByteBuf.readBytes(AbstractByteBuf.java:871)
> >
> >
> org.apache.nifi.distributed.cache.server.codec.CacheRequestDecoder.readHeader(CacheRequestDecoder.java:238)
> >
> >
> org.apache.nifi.distributed.cache.server.codec.CacheRequestDecoder.decode(CacheRequestDecoder.java:80)
> >
> >
> io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:519)
> >
> >
> io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:458)
> >
> >
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:280)
> >
> >
> 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.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286)
> >
> >
> 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$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
> >
> >
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
> >
> >
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
> >
> >
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
> >
> >
> io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
> >
> >
> io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
> >
> >
> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
> >
> >
> io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
> >
> > io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
> >
> >
> io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
> >
> > io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> >
> >
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> >
> > java.base/java.lang.Thread.run(Thread.java:833)
>

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