GitHub user eyalzit opened a pull request:
https://github.com/apache/spark/pull/16991
[SPARK-19594][Structured Streaming] StreamingQueryListener fails to handle
QueryTerminatedEvent if more then one listeners exists
## What changes were proposed in this pull request?
currently if multiple streaming queries listeners exists, when a
QueryTerminatedEvent is triggered, only one of the listeners will be invoked
while the rest of the listeners will ignore the event.
this is caused since the the streaming queries listeners bus holds a set of
running queries ids and when a termination event is triggered, after the first
listeners is handling the event, the terminated query id is being removed from
the set.
in this PR, the query id will be removed from the set only after all the
listeners handles the event
## How was this patch tested?
a test with multiple listeners has been added to StreamingQueryListenerSuite
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/eyalzit/spark master
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16991.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 #16991
----
commit ad75ec0eb336f265d638ce97567984a464bae41d
Author: Eyal Zituny <eyal.zit...@equalum.io>
Date: 2017-02-19T10:55:30Z
[SPARK-19594] StreamingQueryListener fails to handle QueryTerminatedEvent
if more then one listeners exists
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