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Posted to dev@flink.apache.org by "Ufuk Celebi (JIRA)" <ji...@apache.org> on 2014/08/25 11:20:59 UTC
[jira] [Created] (FLINK-1063) Race condition in
NettyConnectionManager
Ufuk Celebi created FLINK-1063:
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Summary: Race condition in NettyConnectionManager
Key: FLINK-1063
URL: https://issues.apache.org/jira/browse/FLINK-1063
Project: Flink
Issue Type: Bug
Components: Distributed Runtime
Affects Versions: 0.6-incubating
Reporter: Ufuk Celebi
Assignee: Ufuk Celebi
The TCP channel queuing mechanism in {{NettyConnectionManager}} has a race condition, which may result in re-ordering of envelopes at the receiver (the dreaded {{"Expected data packet X but received Y"}} exception).
Thanks to [AHeise|https://github.com/AHeise] for reporting the problem.
The problem has been introduced with commits 52512636444902497e47ccbfb1cabaffb3e23343 ... 32d168f439bdb5dfab02a3ab2d12e87d0622a67e.
I will revert the respective commits and implement a fall back, which limits TCP channel multiplexing and immediately closes TCP channels.
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