GitHub user uncleGen opened a pull request:
https://github.com/apache/spark/pull/16687
[SPARK-19343][DStreams] Do once optimistic checkpoint before stop
## What changes were proposed in this pull request?
Streaming job restarts from checkpoint, and it will rebuild several batch
until finding latest checkpointed RDD. So we can do once optimistic checkpoint
just before stop, so that reducing unnecessary recomputation.
## How was this patch tested?
add new unit test
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/uncleGen/spark SPARK-19343
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16687.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 #16687
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commit a63306e53c19b0db6574260c9716c6a76cf223e0
Author: uncleGen <husty...@gmail.com>
Date: 2017-01-24T06:24:08Z
SPARK-19343: Do once optimistic checkpoint before stop
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