Stephan Ewen created FLINK-2519:
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Summary: BarrierBuffers get stuck infinitely when some inputs end
early
Key: FLINK-2519
URL: https://issues.apache.org/jira/browse/FLINK-2519
Project: Flink
Issue Type: Bug
Components: Streaming
Affects Versions: 0.10
Reporter: Stephan Ewen
Assignee: Stephan Ewen
Priority: Blocker
Fix For: 0.10
When some sources exit early, the barrier buffer may start an alignment, but
will never complete it, because some inputs never deliver a checkpoint barrier.
[FLINK-2515] mitigates most of the problem, by not starting checkpoints any
more when some sources already finished. When a checkpoint is started while a
source is finishing, the barrier buffer may still align infinitely.
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