GitHub user srowen opened a pull request:
https://github.com/apache/spark/pull/15381
[SPARK-17707] [WEBUI] Web UI prevents spark-submit application to be
finished
## What changes were proposed in this pull request?
This expands calls to Jetty's simple `ServerConnector` constructor to
explicitly specify a `ScheduledExecutorScheduler` that makes daemon threads. It
should otherwise result in exactly the same configuration, because the other
args are copied from the constructor that is currently called.
(I'm not sure we should change the Hive Thriftserver impl, but I did
anyway.)
This also adds `sc.stop()` to the quick start guide example.
## How was this patch tested?
Existing tests; _pending_ at least manual verification of the fix.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/srowen/spark SPARK-17707
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15381.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 #15381
----
commit 91144aaa2bf499ed96341ff03cbc31978d69d8e6
Author: Sean Owen <so...@cloudera.com>
Date: 2016-10-06T18:59:39Z
Force Jetty ServerConnectors to use daemon Scheduler threads
commit ad19603ff91aff2302735591e3919590c1be2ab9
Author: Sean Owen <so...@cloudera.com>
Date: 2016-10-06T18:59:57Z
Emphasize in docs that SparkContext should be stopped at exit
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