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Posted to issues@flink.apache.org by "Hong Liang Teoh (Jira)" <ji...@apache.org> on 2025/06/26 16:35:00 UTC
[jira] [Updated] (FLINK-36155) ByteBuf.release() was not called before it's garbage-collected in Kinesis Connector
[ https://issues.apache.org/jira/browse/FLINK-36155?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hong Liang Teoh updated FLINK-36155:
------------------------------------
Fix Version/s: aws-connector-5.2.0
(was: aws-connector-5.1.0)
> ByteBuf.release() was not called before it's garbage-collected in Kinesis Connector
> -----------------------------------------------------------------------------------
>
> Key: FLINK-36155
> URL: https://issues.apache.org/jira/browse/FLINK-36155
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Kinesis
> Affects Versions: aws-connector-4.2.0, 1.19.1
> Reporter: Keith Lee
> Priority: Major
> Fix For: aws-connector-5.2.0
>
>
> The following warning logs are seen from kinesis connector indicating memory leak.
> ```
> 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:
> org.apache.flink.kinesis.shaded.io.netty.buffer.UnpooledByteBufAllocator.newDirectBuffer(UnpooledByteBufAllocator.java:96)
> org.apache.flink.kinesis.shaded.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:188)
> org.apache.flink.kinesis.shaded.io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:179)
> org.apache.flink.kinesis.shaded.io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:116)
> org.apache.flink.kinesis.shaded.io.netty.handler.codec.ByteToMessageDecoder.expandCumulation(ByteToMessageDecoder.java:560)
> org.apache.flink.kinesis.shaded.io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:103)
> org.apache.flink.kinesis.shaded.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:288)
> org.apache.flink.kinesis.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
> org.apache.flink.kinesis.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> org.apache.flink.kinesis.shaded.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
> org.apache.flink.kinesis.shaded.io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1373)
> org.apache.flink.kinesis.shaded.io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1236)
> org.apache.flink.kinesis.shaded.io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1285)
> org.apache.flink.kinesis.shaded.io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:529)
> org.apache.flink.kinesis.shaded.io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:468)
> org.apache.flink.kinesis.shaded.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290)
> org.apache.flink.kinesis.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
> org.apache.flink.kinesis.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> org.apache.flink.kinesis.shaded.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
> org.apache.flink.kinesis.shaded.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
> org.apache.flink.kinesis.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
> org.apache.flink.kinesis.shaded.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> org.apache.flink.kinesis.shaded.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
> org.apache.flink.kinesis.shaded.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
> org.apache.flink.kinesis.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
> org.apache.flink.kinesis.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
> org.apache.flink.kinesis.shaded.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
> org.apache.flink.kinesis.shaded.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
> org.apache.flink.kinesis.shaded.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
> org.apache.flink.kinesis.shaded.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> java.base/java.lang.Thread.run(Thread.java:829)","messageSchemaVersion":"1","messageType":"ERROR","threadName":"aws-java-sdk-NettyEventLoop-111-12
> ```
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