GitHub user zhengruifeng opened a pull request:
https://github.com/apache/spark/pull/20956
[SPARK-23841][ML] NodeIdCache should unpersist the last cached
nodeIdsForInstances
## What changes were proposed in this pull request?
unpersist the last cached nodeIdsForInstances in `deleteAllCheckpoints`
## How was this patch tested?
existing tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zhengruifeng/spark NodeIdCache_cleanup
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20956.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 #20956
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commit 96529235a9ce7279ec3eee7ad58b4c7e3c8119ae
Author: Zheng RuiFeng <ruifengz@...>
Date: 2018-04-02T04:01:20Z
init pr
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