GitHub user vinodkc opened a pull request:
https://github.com/apache/spark/pull/18771
[SPARK-21478][SQL] Avoid unpersisting related Datasets
## What changes were proposed in this pull request?
While unpersisting a dataset, only unpersist and remove that datasets's
plan from Cachemanager's cachedData.
## How was this patch tested?
Added unit tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/vinodkc/spark br_SPARK-21478
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18771.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 #18771
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commit e187aeb67a13493c6f5a9e540779a677d3502b04
Author: vinodkc <vinod.kc...@gmail.com>
Date: 2017-07-29T15:10:24Z
Fixed unpersisting related DFs
commit 857b3dd5804355331d3bef4eb8136e6604232758
Author: vinodkc <vinod.kc...@gmail.com>
Date: 2017-07-29T18:01:01Z
Updated test cases and condition for unpersist
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