GitHub user zsxwing opened a pull request:
https://github.com/apache/spark/pull/7960
[SPARK-9639][Streaming]Fix a potential NPE in Streaming JobScheduler
Because `JobScheduler.stop(false)` may set `eventLoop` to null when
`JobHandler` is running, then it's possible that when `post` is called,
`eventLoop` happens to null.
This PR fixed this bug and also set threads in `jobExecutor` to `daemon`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zsxwing/spark fix-npe
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7960.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 #7960
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commit b0864c4b4a0978f647db44eebfeb3cab098d9291
Author: zsxwing <[email protected]>
Date: 2015-08-05T13:11:22Z
Fix a potential NPE in Streaming JobScheduler
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