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https://issues.apache.org/jira/browse/ARTEMIS-2482?focusedWorklogId=310156&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-310156
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ASF GitHub Bot logged work on ARTEMIS-2482:
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Author: ASF GitHub Bot
Created on: 10/Sep/19 22:24
Start Date: 10/Sep/19 22:24
Worklog Time Spent: 10m
Work Description: franz1981 commented on issue #2832: ARTEMIS-2482 Large
messages could leak native ByteBuffers
URL: https://github.com/apache/activemq-artemis/pull/2832#issuecomment-530138441
@wy96f please take a look that you've recently have fun with `ByteBuf`s :)
I see too that the change introduced with has a memory leak similar to the
one of this PR on
https://github.com/apache/activemq-artemis/blob/e537fbfde06a5a09ef369401e715970c4003bd32/artemis-server/src/main/java/org/apache/activemq/artemis/core/paging/impl/Page.java#L149
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Issue Time Tracking
-------------------
Worklog Id: (was: 310156)
Time Spent: 1h 40m (was: 1.5h)
> Large messages could leak native ByteBuffers
> --------------------------------------------
>
> Key: ARTEMIS-2482
> URL: https://issues.apache.org/jira/browse/ARTEMIS-2482
> Project: ActiveMQ Artemis
> Issue Type: Bug
> Components: AMQP, Broker, OpenWire
> Affects Versions: 2.10.0
> Reporter: Francesco Nigro
> Priority: Major
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> JournalStorageManager::addBytesToLargeMessage and
> LargeServerMessageImpl::DecodingContext::encode are relying on the pooling of
> direct ByteBuffers performed internally by NIO.
> Those buffers are pooled until certain size limit (ie
> jdk.nio.maxCachedBufferSize, as shown on
> https://bugs.openjdk.java.net/browse/JDK-8147468) otherwise are freed right
> after the write succeed.
> If the property jdk.nio.maxCachedBufferSize isn't set, the direct buffers are
> always pooled regardless of the size, leading to OOM issues on high load of
> variable sized writes due to the amount of direct memory allocated and not
> released/late released.
> This should be an alternative fix for
> https://issues.apache.org/jira/browse/ARTEMIS-1811 and it check if such
> pooling is happening, making large messages to be read/written in chunks by
> using the Netty ByteBuf pool to handle any intermediate buffer.
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