[
https://issues.apache.org/jira/browse/CASSANDRA-20753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18004420#comment-18004420
]
Dmitry Konstantinov edited comment on CASSANDRA-20753 at 7/10/25 1:19 PM:
--------------------------------------------------------------------------
{code:java}
@Override
public ByteBuf capacity(int newCapacity)
{
if (newCapacity == capacity())
return this;
ByteBuf newBuffer = super.capacity(newCapacity);
ByteBuffer nioBuffer = newBuffer.nioBuffer(0, newBuffer.capacity());
bufferPool.put(wrapped);
wrapped = nioBuffer;
return newBuffer;
} {code}
I suppose the problem is nioBuffer is not same ByteBuffer as we allocated from
BufferPool within capacity(..) using allocateDirect but a duplicate/slice of
it, so when we try to return it in deallocate() back to BufferPool - it is not
recognized.
was (Author: dnk):
{code:java}
@Override
public ByteBuf capacity(int newCapacity)
{
if (newCapacity == capacity())
return this;
ByteBuf newBuffer = super.capacity(newCapacity);
ByteBuffer nioBuffer = newBuffer.nioBuffer(0, newBuffer.capacity());
bufferPool.put(wrapped);
wrapped = nioBuffer;
return newBuffer;
} {code}
I suppose the problem is nioBuffer is not that same ByteBuffer as we allocated
from BufferPool within capacity(..) using allocateDirect but a duplicate/slice
of it, so when we try to return it on deallocate() back to BufferPool - it is
not recognized.
> BufferPool LEAK DETECTED:
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.capacity
> ---------------------------------------------------------------------------------------
>
> Key: CASSANDRA-20753
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20753
> Project: Apache Cassandra
> Issue Type: Bug
> Components: Messaging/Internode
> Reporter: Dmitry Konstantinov
> Priority: Normal
>
> Buffer leak detection messages are printed in
> org.apache.cassandra.distributed.test.SSTableLoaderEncryptionOptionsTest.bulkLoaderSuccessfullyStreamsOverSslWithDeprecatedSslStoragePort
> test:
> [https://ci-cassandra.apache.org/job/Cassandra-trunk/2198/testReport/junit/org.apache.cassandra.distributed.test/SSTableLoaderEncryptionOptionsTest/Tests___jvm_dtest_jdk11_15_16___bulkLoaderSuccessfullyStreamsOverSslWithDeprecatedSslStoragePort__jdk11_x86_64/]
>
> [https://ci-cassandra.apache.org/view/patches/job/Cassandra-devbranch-5/318/testReport/junit/org.apache.cassandra.distributed.test/SSTableLoaderEncryptionOptionsTest/Tests___jvm_dtest_jdk11_3_12___bulkLoaderSuccessfullyStreamsOverSslWithDeprecatedSslStoragePort__jdk11_x86_64/]
>
> {code:java}
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,618
> SubstituteLogger.java:222 - ERROR 10:44:56,618 LEAK DETECTED: a reference
> (@1583533002) to @1583533002 was not released before the reference was
> garbage collected
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR [node1_Reference-Reaper] node1
> 2025-07-08T10:44:56,618 Ref.java:250 - LEAK DETECTED: a reference
> (@1583533002) to @1583533002 was not released before the reference was
> garbage collected
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR 10:44:56,619 Allocate trace @1583533002:
> Thread[node1_Messaging-EventLoop-3-1,5,isolatedExecutor]
> at java.base/java.lang.Thread.getStackTrace(Thread.java:1602)
> at org.apache.cassandra.utils.concurrent.Ref$Debug.<init>(Ref.java:280)
> at org.apache.cassandra.utils.concurrent.Ref$State.<init>(Ref.java:201)
> at org.apache.cassandra.utils.concurrent.Ref.<init>(Ref.java:118)
> at
> org.apache.cassandra.utils.concurrent.Ref$DirectBufferRef.<init>(Ref.java:825)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.setAttachment(BufferPool.java:1334)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.set(BufferPool.java:1474)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.get(BufferPool.java:1464)
> at
> org.apache.cassandra.utils.memory.BufferPool$MicroQueueOfChunks.get(BufferPool.java:629)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGetInternal(BufferPool.java:963)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGet(BufferPool.java:946)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.get(BufferPool.java:906)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.getAtLeast(BufferPool.java:901)
> at
> org.apache.cassandra.utils.memory.BufferPool.getAtLeast(BufferPool.java:219)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.allocateDirect(BufferPoolAllocator.java:129)
> at
> io.netty.buffer.UnpooledDirectByteBuf.capacity(UnpooledDirectByteBuf.java:156)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.capacity(BufferPoolAllocator.java:118)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable0(AbstractByteBuf.java:305)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable(AbstractByteBuf.java:280)
> at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1103)
> at
> io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:105)
> at
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:288)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)
> at
> io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799)
> at
> io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$1.run(AbstractEpollChannel.java:425)
> at
> io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
> at
> io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
> at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:405)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:998)
> at
> io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:829)
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR [node1_Reference-Reaper] node1
> 2025-07-08T10:44:56,619 Ref.java:290 - Allocate trace @1583533002:
> Thread[node1_Messaging-EventLoop-3-1,5,isolatedExecutor]
> at java.base/java.lang.Thread.getStackTrace(Thread.java:1602)
> at org.apache.cassandra.utils.concurrent.Ref$Debug.<init>(Ref.java:280)
> at org.apache.cassandra.utils.concurrent.Ref$State.<init>(Ref.java:201)
> at org.apache.cassandra.utils.concurrent.Ref.<init>(Ref.java:118)
> at
> org.apache.cassandra.utils.concurrent.Ref$DirectBufferRef.<init>(Ref.java:825)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.setAttachment(BufferPool.java:1334)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.set(BufferPool.java:1474)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.get(BufferPool.java:1464)
> at
> org.apache.cassandra.utils.memory.BufferPool$MicroQueueOfChunks.get(BufferPool.java:629)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGetInternal(BufferPool.java:963)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGet(BufferPool.java:946)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.get(BufferPool.java:906)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.getAtLeast(BufferPool.java:901)
> at
> org.apache.cassandra.utils.memory.BufferPool.getAtLeast(BufferPool.java:219)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.allocateDirect(BufferPoolAllocator.java:129)
> at
> io.netty.buffer.UnpooledDirectByteBuf.capacity(UnpooledDirectByteBuf.java:156)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.capacity(BufferPoolAllocator.java:118)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable0(AbstractByteBuf.java:305)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable(AbstractByteBuf.java:280)
> at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1103)
> at
> io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:105)
> at
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:288)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)
> at
> io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799)
> at
> io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$1.run(AbstractEpollChannel.java:425)
> at
> io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
> at
> io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
> at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:405)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:998)
> at
> io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:829)
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR 10:44:56,619 LEAK DETECTED: a reference
> (@1928839795) to @1928839795 was not released before the reference was
> garbage collected
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR [node1_Reference-Reaper] node1
> 2025-07-08T10:44:56,619 Ref.java:250 - LEAK DETECTED: a reference
> (@1928839795) to @1928839795 was not released before the reference was
> garbage collected
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR 10:44:56,619 Allocate trace @1928839795:
> Thread[node1_Messaging-EventLoop-3-2,5,isolatedExecutor]
> at java.base/java.lang.Thread.getStackTrace(Thread.java:1602)
> at org.apache.cassandra.utils.concurrent.Ref$Debug.<init>(Ref.java:280)
> at org.apache.cassandra.utils.concurrent.Ref$State.<init>(Ref.java:201)
> at org.apache.cassandra.utils.concurrent.Ref.<init>(Ref.java:118)
> at
> org.apache.cassandra.utils.concurrent.Ref$DirectBufferRef.<init>(Ref.java:825)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.setAttachment(BufferPool.java:1334)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.set(BufferPool.java:1474)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.get(BufferPool.java:1464)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGetInternal(BufferPool.java:973)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGet(BufferPool.java:946)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.get(BufferPool.java:906)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.getAtLeast(BufferPool.java:901)
> at
> org.apache.cassandra.utils.memory.BufferPool.getAtLeast(BufferPool.java:219)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.allocateDirect(BufferPoolAllocator.java:129)
> at
> io.netty.buffer.UnpooledDirectByteBuf.capacity(UnpooledDirectByteBuf.java:156)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.capacity(BufferPoolAllocator.java:118)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable0(AbstractByteBuf.java:305)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable(AbstractByteBuf.java:280)
> at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1103)
> at
> io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:105)
> at
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:288)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)
> at
> io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799)
> at
> io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$1.run(AbstractEpollChannel.java:425)
> at
> io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
> at
> io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
> at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:405)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:998)
> at
> io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:829)
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR [node1_Reference-Reaper] node1
> 2025-07-08T10:44:56,619 Ref.java:290 - Allocate trace @1928839795:
> Thread[node1_Messaging-EventLoop-3-2,5,isolatedExecutor]
> at java.base/java.lang.Thread.getStackTrace(Thread.java:1602)
> at org.apache.cassandra.utils.concurrent.Ref$Debug.<init>(Ref.java:280)
> at org.apache.cassandra.utils.concurrent.Ref$State.<init>(Ref.java:201)
> at org.apache.cassandra.utils.concurrent.Ref.<init>(Ref.java:118)
> at
> org.apache.cassandra.utils.concurrent.Ref$DirectBufferRef.<init>(Ref.java:825)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.setAttachment(BufferPool.java:1334)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.set(BufferPool.java:1474)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.get(BufferPool.java:1464)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGetInternal(BufferPool.java:973)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGet(BufferPool.java:946)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.get(BufferPool.java:906)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.getAtLeast(BufferPool.java:901)
> at
> org.apache.cassandra.utils.memory.BufferPool.getAtLeast(BufferPool.java:219)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.allocateDirect(BufferPoolAllocator.java:129)
> at
> io.netty.buffer.UnpooledDirectByteBuf.capacity(UnpooledDirectByteBuf.java:156)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.capacity(BufferPoolAllocator.java:118)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable0(AbstractByteBuf.java:305)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable(AbstractByteBuf.java:280)
> at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1103)
> at
> io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:105)
> at
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:288)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)
> at
> io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799)
> at
> io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$1.run(AbstractEpollChannel.java:425)
> at
> io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
> at
> io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
> at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:405)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:998)
> at
> io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:829)
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR 10:44:56,619 LEAK DETECTED: a reference
> (@2119892520) to @2119892520 was not released before the reference was
> garbage collected
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR [node1_Reference-Reaper] node1
> 2025-07-08T10:44:56,619 Ref.java:250 - LEAK DETECTED: a reference
> (@2119892520) to @2119892520 was not released before the reference was
> garbage collected
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR 10:44:56,619 Allocate trace @2119892520:
> Thread[node1_Messaging-EventLoop-3-1,5,isolatedExecutor]
> at java.base/java.lang.Thread.getStackTrace(Thread.java:1602)
> at org.apache.cassandra.utils.concurrent.Ref$Debug.<init>(Ref.java:280)
> at org.apache.cassandra.utils.concurrent.Ref$State.<init>(Ref.java:201)
> at org.apache.cassandra.utils.concurrent.Ref.<init>(Ref.java:118)
> at
> org.apache.cassandra.utils.concurrent.Ref$DirectBufferRef.<init>(Ref.java:825)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.setAttachment(BufferPool.java:1334)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.set(BufferPool.java:1474)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.get(BufferPool.java:1464)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGetInternal(BufferPool.java:973)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGet(BufferPool.java:946)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.get(BufferPool.java:906)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.getAtLeast(BufferPool.java:901)
> at
> org.apache.cassandra.utils.memory.BufferPool.getAtLeast(BufferPool.java:219)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.allocateDirect(BufferPoolAllocator.java:129)
> at
> io.netty.buffer.UnpooledDirectByteBuf.capacity(UnpooledDirectByteBuf.java:156)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.capacity(BufferPoolAllocator.java:118)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable0(AbstractByteBuf.java:305)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable(AbstractByteBuf.java:280)
> at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1103)
> at
> io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:105)
> at
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:288)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)
> at
> io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799)
> at
> io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$1.run(AbstractEpollChannel.java:425)
> at
> io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
> at
> io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
> at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:405)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:998)
> at
> io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:829)
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR [node1_Reference-Reaper] node1
> 2025-07-08T10:44:56,619 Ref.java:290 - Allocate trace @2119892520:
> Thread[node1_Messaging-EventLoop-3-1,5,isolatedExecutor]
> at java.base/java.lang.Thread.getStackTrace(Thread.java:1602)
> at org.apache.cassandra.utils.concurrent.Ref$Debug.<init>(Ref.java:280)
> at org.apache.cassandra.utils.concurrent.Ref$State.<init>(Ref.java:201)
> at org.apache.cassandra.utils.concurrent.Ref.<init>(Ref.java:118)
> at
> org.apache.cassandra.utils.concurrent.Ref$DirectBufferRef.<init>(Ref.java:825)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.setAttachment(BufferPool.java:1334)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.set(BufferPool.java:1474)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.get(BufferPool.java:1464)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGetInternal(BufferPool.java:973)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGet(BufferPool.java:946)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.get(BufferPool.java:906)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.getAtLeast(BufferPool.java:901)
> at
> org.apache.cassandra.utils.memory.BufferPool.getAtLeast(BufferPool.java:219)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.allocateDirect(BufferPoolAllocator.java:129)
> at
> io.netty.buffer.UnpooledDirectByteBuf.capacity(UnpooledDirectByteBuf.java:156)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.capacity(BufferPoolAllocator.java:118)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable0(AbstractByteBuf.java:305)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable(AbstractByteBuf.java:280)
> at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1103)
> at
> io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:105)
> at
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:288)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)
> at
> io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799)
> at
> io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$1.run(AbstractEpollChannel.java:425)
> at
> io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
> at
> io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
> at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:405)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:998)
> at
> io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:829)
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR 10:44:56,619 LEAK DETECTED: a reference
> (@476039266) to @476039266 was not released before the reference was garbage
> collected
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,619
> SubstituteLogger.java:222 - ERROR [node1_Reference-Reaper] node1
> 2025-07-08T10:44:56,619 Ref.java:250 - LEAK DETECTED: a reference
> (@476039266) to @476039266 was not released before the reference was garbage
> collected
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,620
> SubstituteLogger.java:222 - ERROR 10:44:56,619 Allocate trace @476039266:
> Thread[node1_Messaging-EventLoop-3-2,5,isolatedExecutor]
> at java.base/java.lang.Thread.getStackTrace(Thread.java:1602)
> at org.apache.cassandra.utils.concurrent.Ref$Debug.<init>(Ref.java:280)
> at org.apache.cassandra.utils.concurrent.Ref$State.<init>(Ref.java:201)
> at org.apache.cassandra.utils.concurrent.Ref.<init>(Ref.java:118)
> at
> org.apache.cassandra.utils.concurrent.Ref$DirectBufferRef.<init>(Ref.java:825)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.setAttachment(BufferPool.java:1334)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.set(BufferPool.java:1474)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.get(BufferPool.java:1464)
> at
> org.apache.cassandra.utils.memory.BufferPool$MicroQueueOfChunks.get(BufferPool.java:629)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGetInternal(BufferPool.java:963)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGet(BufferPool.java:946)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.get(BufferPool.java:906)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.getAtLeast(BufferPool.java:901)
> at
> org.apache.cassandra.utils.memory.BufferPool.getAtLeast(BufferPool.java:219)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.allocateDirect(BufferPoolAllocator.java:129)
> at
> io.netty.buffer.UnpooledDirectByteBuf.capacity(UnpooledDirectByteBuf.java:156)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.capacity(BufferPoolAllocator.java:118)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable0(AbstractByteBuf.java:305)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable(AbstractByteBuf.java:280)
> at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1103)
> at
> io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:105)
> at
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:288)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)
> at
> io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799)
> at
> io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$1.run(AbstractEpollChannel.java:425)
> at
> io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
> at
> io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
> at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:405)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:998)
> at
> io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:829)
> INFO [node1_Reference-Reaper] 2025-07-08T10:44:56,620
> SubstituteLogger.java:222 - ERROR [node1_Reference-Reaper] node1
> 2025-07-08T10:44:56,619 Ref.java:290 - Allocate trace @476039266:
> Thread[node1_Messaging-EventLoop-3-2,5,isolatedExecutor]
> at java.base/java.lang.Thread.getStackTrace(Thread.java:1602)
> at org.apache.cassandra.utils.concurrent.Ref$Debug.<init>(Ref.java:280)
> at org.apache.cassandra.utils.concurrent.Ref$State.<init>(Ref.java:201)
> at org.apache.cassandra.utils.concurrent.Ref.<init>(Ref.java:118)
> at
> org.apache.cassandra.utils.concurrent.Ref$DirectBufferRef.<init>(Ref.java:825)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.setAttachment(BufferPool.java:1334)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.set(BufferPool.java:1474)
> at
> org.apache.cassandra.utils.memory.BufferPool$Chunk.get(BufferPool.java:1464)
> at
> org.apache.cassandra.utils.memory.BufferPool$MicroQueueOfChunks.get(BufferPool.java:629)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGetInternal(BufferPool.java:963)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.tryGet(BufferPool.java:946)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.get(BufferPool.java:906)
> at
> org.apache.cassandra.utils.memory.BufferPool$LocalPool.getAtLeast(BufferPool.java:901)
> at
> org.apache.cassandra.utils.memory.BufferPool.getAtLeast(BufferPool.java:219)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.allocateDirect(BufferPoolAllocator.java:129)
> at
> io.netty.buffer.UnpooledDirectByteBuf.capacity(UnpooledDirectByteBuf.java:156)
> at
> org.apache.cassandra.net.BufferPoolAllocator$Wrapped.capacity(BufferPoolAllocator.java:118)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable0(AbstractByteBuf.java:305)
> at
> io.netty.buffer.AbstractByteBuf.ensureWritable(AbstractByteBuf.java:280)
> at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1103)
> at
> io.netty.handler.codec.ByteToMessageDecoder$1.cumulate(ByteToMessageDecoder.java:105)
> at
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:288)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
> at
> io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
> at
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)
> at
> io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:799)
> at
> io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$1.run(AbstractEpollChannel.java:425)
> at
> io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173)
> at
> io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
> at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:405)
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:998)
> at
> io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:829)
> {code}
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