Nico Kruber created FLINK-9761:
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Summary: Potential buffer leak in PartitionRequestClientHandler
during job failures
Key: FLINK-9761
URL: https://issues.apache.org/jira/browse/FLINK-9761
Project: Flink
Issue Type: Bug
Components: Network
Affects Versions: 1.5.0
Reporter: Nico Kruber
Assignee: Nico Kruber
Fix For: 1.6.0, 1.5.2
{{PartitionRequestClientHandler#stagedMessages}} may be accessed from multiple
threads:
1) Netty's IO thread
2) During cancellation,
{{PartitionRequestClientHandler.BufferListenerTask#notifyBufferDestroyed}} is
called
If {{PartitionRequestClientHandler.BufferListenerTask#notifyBufferDestroyed}}
thinks, {{stagesMessages}} is empty, however, it will not install the
{{stagedMessagesHandler}} that consumes and releases buffers from received
messages.
Unless some unexpected combination of code calls prevents this from happening,
this would leak the non-recycled buffers.
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