Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/4759#issuecomment-76026644
Ok, I think this might work. But I'd call just `createTempDir` instead of
`createDirectory` + `registerForWhatever`.
I was worried that this might cause shuffle data to be deleted when
executors are killed in dynamic allocation mode. But the code path being
changed is not used by executors in Yarn mode (nor in Standalone mode after my
change), so it all should be fine.
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