GitHub user abellina opened a pull request:
https://github.com/apache/storm/pull/1694
STORM-2101: fixes npe in compute-executors in nimbus
We observed compute-executors can throw NPE while shutting down a topology
sporadically.
joinMaps (join-maps) will NPE if one of the maps is nil. The only one that
can be nil in this case is component->executors.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/abellina/storm
STORM-2101_compute_executors_npe_in_nimbus
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/storm/pull/1694.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 #1694
commit b0944100e339f6d28c6c7bb936bef8ebb1948d89
Author: Alessandro Bellina
Date: 2016-09-19T18:33:37Z
STORM-2101: fixes npe in compute-executors in nimbus
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