GitHub user yhuai opened a pull request:
https://github.com/apache/spark/pull/9453
[SPARK-9858] [SQL] Add an ExchangeCoordinator to estimate the number of
post-shuffle partitions for aggregates and joins (follow-up)
https://issues.apache.org/jira/browse/SPARK-9858
This PR is the follow-up work of https://github.com/apache/spark/pull/9276.
It addresses @JoshRosen's comments.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/yhuai/spark numReducer-followUp
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/9453.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 #9453
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commit d77c9216ee4e2dae1b07633341dbc9f90d32af8d
Author: Yin Huai <yh...@databricks.com>
Date: 2015-11-03T23:53:03Z
Address Josh's comments.
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