GitHub user andrewor14 opened a pull request:
https://github.com/apache/spark/pull/12244
[SPARK-14468] Always enable OutputCommitCoordinator
## What changes were proposed in this pull request?
`OutputCommitCoordinator` was introduced to deal with concurrent task
attempts racing to write output, leading to data loss or corruption. For more
detail, read the [JIRA
description](https://issues.apache.org/jira/browse/SPARK-14468).
Before: `OutputCommitCoordinator` is enabled only if speculation is enabled.
After: `OutputCommitCoordinator` is always enabled.
Users may still disable this through
`spark.hadoop.outputCommitCoordination.enabled`, but they really shouldn't...
## How was this patch tested?
`OutputCommitCoordinator*Suite`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/andrewor14/spark always-occ
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12244.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 #12244
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commit ba7fc4b39645939c44628ff3cdeed8f0dd3965a0
Author: Andrew Or <[email protected]>
Date: 2016-04-07T22:23:03Z
Do not tie OutputCommitCoordinator to speculation
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