GitHub user echauchot opened a pull request:
https://github.com/apache/beam/pull/2659
[BEAM-2029] null pointer exception while evaluating group by key in spark
runner in streaming mode
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R: @aviemzur
This PR, for now, just adds a test that raises a null pointer exception in
spark runner so it cannot be merged as it is now. I don't know Spark runner
well enough for now to do the fix. But I suspect that the problem is due to the
`withFanout()` support in spark runner.
@aviemzur , can you take a look at the test and do the fix?
As we need the fix to have the build pass and merge this PR, what do you
think about forking this PR and do the fix there, I will merge your PR and we
will put the global PR (test + fix) to review and take care that your commits
do not get squashed?
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/echauchot/beam
BEAM-2029-NullPointerException_while_evaluating_GroupByKey_in_Spark_Runner_in_streaming_mode
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/beam/pull/2659.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 #2659
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commit b68f0c5c2b507db7b66ee451208c0e19071ad7fd
Author: Etienne Chauchot <[email protected]>
Date: 2017-04-21T14:41:48Z
[BEAM-2029] NullPointerException while evaluating GroupByKey in Spark
Runner in streaming mode
Add test to reproduce the NullPointerException
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