[GitHub] spark pull request #14794: [SPARK-15083][WEB UI] History Server can OOM due ...

[ajbozarth]

Github user ajbozarth closed the pull request at:

https://github.com/apache/spark/pull/14794


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[GitHub] spark pull request #14794: [SPARK-15083][WEB UI] History Server can OOM due ...

[ajbozarth]

GitHub user ajbozarth opened a pull request:

https://github.com/apache/spark/pull/14794

[SPARK-15083][WEB UI] History Server can OOM due to unlimited TaskUIData

## What changes were proposed in this pull request?

This is a back port of #14673 addressing merge conflicts in package.scala 
that prevented a cherry-pick to `branch-2.0`

Since the History Server currently loads all application's data it can OOM 
if too many applications have a significant task count. Trims tasks by 
`spark.ui.retainedTasks` (default: 10)

## How was this patch tested?

Manual testing and dev/run-tests


You can merge this pull request into a Git repository by running:

$ git pull https://github.com/ajbozarth/spark spark15083-branch-2.0

Alternatively you can review and apply these changes as the patch at:

https://github.com/apache/spark/pull/14794.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 #14794


commit 57dcb6bf1d49f49b60b7d5a31a54bc9dfe0bfc95
Author: Alex Bozarth 
Date:   2016-08-24T19:39:41Z

[SPARK-15083][WEB UI] History Server can OOM due to unlimited TaskUIData

Based on #12990 by tankkyo

Since the History Server currently loads all application's data it can OOM 
if too many applications have a significant task count. `spark.ui.trimTasks` 
(default: false) can be set to true to trim tasks by `spark.ui.retainedTasks` 
(default: 1)

(This is a "quick fix" to help those running into the problem until a 
update of how the history server loads app data can be done)

Manual testing and dev/run-tests


![spark-15083](https://cloud.githubusercontent.com/assets/13952758/17713694/fe82d246-63b0-11e6-9697-b87ea75ff4ef.png)

Author: Alex Bozarth 

Closes #14673 from ajbozarth/spark15083.




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