GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/12187
[HOTFIX] Fix `optional` to `createOptional`.
## What changes were proposed in this pull request?
This PR fixes the following line.
```
private[spark] val STAGING_DIR = ConfigBuilder("spark.yarn.stagingDir")
.doc("Staging directory used while submitting applications.")
.stringConf
- .optional
+ .createOptional
```
## How was this patch tested?
Pass the build.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark hotfix
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12187.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 #12187
----
commit 8bcecedb5959b4d7ce9fc0c8dcdaa48076031307
Author: Dongjoon Hyun <dongj...@apache.org>
Date: 2016-04-05T23:02:27Z
[HOTFIX] Fix `optional` to `createOptional`.
----
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