GitHub user andrewor14 opened a pull request:
https://github.com/apache/spark/pull/13039
[SPARK-15260] Atomically resize memory pools
## What changes were proposed in this pull request?
When we acquire execution memory, we do a lot of things between shrinking
the storage memory pool and enlarging the execution memory pool. In particular,
we call `memoryStore.evictBlocksToFreeSpace`, which may do a lot of I/O and can
throw exceptions. If an exception is thrown, the pool sizes on that executor
will be in a bad state.
This patch minimizes the things we do between the two calls to make the
resizing more atomic.
## How was this patch tested?
Jenkins.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/andrewor14/spark safer-pool
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13039.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 #13039
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commit 632ae1442cde5278065a7017c094252c59c0ddc7
Author: Andrew Or <[email protected]>
Date: 2016-05-10T23:53:59Z
Atomically shrink and stretch memory pools
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