Till Rohrmann created FLINK-5285:
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Summary: CancelCheckpointMarker flood when using at least once mode
Key: FLINK-5285
URL: https://issues.apache.org/jira/browse/FLINK-5285
Project: Flink
Issue Type: Bug
Components: State Backends, Checkpointing
Affects Versions: 1.1.3, 1.2.0
Reporter: Till Rohrmann
Assignee: Till Rohrmann
Fix For: 1.2.0, 1.1.4
When using at least once mode ({{BarrierTracker}}), then an interleaved arrival
of cancellation barriers at the {{BarrierTracker}} of two consecutive
checkpoints can trigger a flood of {{CancelCheckpointMarkers}}.
The following sequence is problematic:
{code}
Cancel(1, 0),
Cancel(2, 0),
Cancel(1, 1),
Cancel(2, 1),
Cancel(1, 2),
Cancel(2, 2)
{code}
with {{Cancel(checkpointId, channelId)}}
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