GitHub user watermen opened a pull request:
https://github.com/apache/spark/pull/7536
[SPARK-9189][SQL] Takes locality and the sum of partition length into
account when partition is instance of HadoopPartition in operator coalesce
Before:
Takes locality and `the number of partitions` into account in operator
coalesce.
After:
Takes locality and `the sum of partition length(part1.len + part2.len + ...
+ partN.len)` into account when partition is instance of HadoopPartition in
operator coalesce.
To make the data size of partition more balanced.
/cc @liancheng @scwf
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/watermen/spark SPARK-9189
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7536.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 #7536
----
commit cb72d0f2ce1432ad58246fbeae60c4565fbb4ce7
Author: Yadong Qi <[email protected]>
Date: 2015-07-20T08:28:06Z
Takes locality and the sum of partition length into account.
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