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Till Rohrmann commented on FLINK-9761: -------------------------------------- Thanks for the quick analysis [~zjwang]. Then I think it would be a good idea to fix this problem for Flink 1.7. > 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 > Priority: Critical > Fix For: 1.5.6, 1.6.3, 1.7.0 > > > {{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. -- This message was sent by Atlassian JIRA (v7.6.3#76005)