GitHub user 10110346 opened a pull request:
https://github.com/apache/spark/pull/20676
[SPARK-23516][CORE] It is unnecessary to transfer unroll memory to storage
memory
## What changes were proposed in this pull request?
In fact, unroll memory is also storage memory,so i think it is unnecessary
to release unroll memory really, and then to get storage memory again.
## How was this patch tested?
Existing unit test
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/10110346/spark notreleasemem
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20676.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 #20676
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commit 0574be52a46ff29253c432f1c71ded041d991351
Author: liuxian <liu.xian3@...>
Date: 2018-02-26T09:38:30Z
fix
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