GitHub user juliuszsompolski opened a pull request:
https://github.com/apache/spark/pull/19915
[SPARK-22721] BytesToBytesMap peak memory usage not accurate after reset()
## What changes were proposed in this pull request?
BytesToBytesMap doesn't update peak memory usage before shrinking back to
initial capacity in reset(), so after a disk spill one never knows what was the
size of hash table was before spilling.
## How was this patch tested?
Checked manually.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/juliuszsompolski/apache-spark SPARK-22721
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/19915.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 #19915
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commit eeb0f31da08e6bf609b8ca6cc6509b949dcbac6e
Author: Juliusz Sompolski <ju...@databricks.com>
Date: 2017-12-06T20:25:35Z
SPARK-22721
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