GitHub user uncleGen opened a pull request:
https://github.com/apache/spark/pull/15829
[SPARK-18379][SQL] Make the parallelism of parallelPartitionDiscovery
configurable.
## What changes were proposed in this pull request?
The largest parallelism in PartitioningAwareFileIndex
#listLeafFilesInParallel() is 10000 in hard code. We may need to make this
number configurable. And in PR, I reduce it to 100.
## How was this patch tested?
Existing ut.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/uncleGen/spark SPARK-18379
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15829.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 #15829
----
commit 112f9d163208ae856d156c13901f438cf026cdda
Author: genmao.ygm <genmao.ygm@genmaoygmdemacbook-air.local>
Date: 2016-11-09T11:09:20Z
SPARK-18379: Make the parallelism of parallelPartitionDiscovery
configurable.
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