[jira] [Updated] (FLINK-9761) Potential buffer leak in PartitionRequestClientHandler during job failures

["Tzu-Li (Gordon) Tai (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-9761?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tzu-Li (Gordon) Tai updated FLINK-9761:
---------------------------------------
    Fix Version/s:     (was: 1.7.2)
                   1.7.3

> 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
>            Priority: Critical
>             Fix For: 1.6.4, 1.7.3, 1.8.0
>
>
> {{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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