GitHub user aljoscha opened a pull request:
https://github.com/apache/flink/pull/1532
[hotfix] Fix interaction of Async calls/checkpointing/canceling
Before, it could happen that a Task is canceled during snapshotting.
Some State Backends would silently swallow exceptions resulting from
this and the Task would get stuck until the cleanup logic gets to it.
Now, we rethrow a CancelTaskException if isRunning is false in
StreamTask after performing snapshots.
This also moves the logic that swallows exceptions in case a task is not
running anymore from StreamTask to the async caller in Task.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/aljoscha/flink cancel-exception-fix
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1532.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1532
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commit ffa7534adf70af0c139a1d8195e49fe494e663e3
Author: Aljoscha Krettek <[email protected]>
Date: 2016-01-20T17:09:12Z
[hotfix] Fix interaction of Async calls/checkpointing/canceling
Before, it could happen that a Task is canceled during snapshotting.
Some State Backends would silently swallow exceptions resulting from
this and the Task would get stuck until the cleanup logic gets to it.
Now, we rethrow a CancelTaskException if isRunning is false in
StreamTask after performing snapshots.
This also moves the logic that swallows exceptions in case a task is not
running anymore from StreamTask to the async caller in Task.
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