GitHub user jinxing64 opened a pull request:
https://github.com/apache/spark/pull/18565
[SPARK-21342] Fix DownloadCallback to work well with RetryingBlockFetcher.
## What changes were proposed in this pull request?
When `RetryingBlockFetcher` retries fetching blocks. There could be two
`DownloadCallback`s download the same content to the same target file. It could
cause `ShuffleBlockFetcherIterator` reading a partial result. This pr proposes
to write a tmp file and rename it to the target file when finish.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jinxing64/spark SPARK-21342
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18565.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 #18565
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commit da65427a94b24b2ad0a6ecf79ac1980dd458c684
Author: jinxing <[email protected]>
Date: 2017-07-07T15:29:58Z
Fix DownloadCallback to work well with RetryingBlockFetcher.
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