GitHub user jinxing64 opened a pull request:
https://github.com/apache/spark/pull/16503
[SPARK-18113] Method canCommit should return the same value when callâ¦
â¦ed by the same attempt multi times.
## What changes were proposed in this pull request?
Method canCommit sends AskPermissionToCommitOutput using askWithRetry. If
timeout, it will send again. Thus AskPermissionToCommitOutput can be received
multi times. Method canCommit should return the same value when called by the
same attempt multi times.
In implementation before this fix, method handleAskPermissionToCommit just
check if there is committer already registered, which is not enough. When
worker retries AskPermissionToCommitOutput it will get CommitDeniedException,
then the task will fail with reason TaskCommitDenied, which is not regarded as
a task failure(SPARK-11178), so TaskScheduler will schedule this task
infinitely.
In this fix OutputCommitCoordinator also checks whether the attemptNumber
in AskPermissionToCommit is the same with registered committer.
## How was this patch tested?
Added a new unit test to OutputCommitCoordinatorSuite.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jinxing64/spark SPARK-18113
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16503.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 #16503
----
commit 43a01ebc76f3483aa585815e709309380159cd5c
Author: jinxing <[email protected]>
Date: 2017-01-08T16:10:26Z
[SPARK-18113] Method canCommit should return the same value when called by
the same attempt multi times.
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