GitHub user kayousterhout opened a pull request:
https://github.com/apache/spark/pull/2832
[SPARK-3984] [SPARK-3983] Improve UI task metrics.
This commit fixes the scheduler delay in the UI (which previously
included things that are not scheduler delay, like time to
deserialize the task and serialize the result), and also
adds finer-grained information to the summary table for each
stage about task launch overhead (which is useful for debugging
performance of short jobs, where the overhead is not-insignificant).
What the new summary metrics table looks like (I also rearranged the
fields slightly, so they appear in roughly chronological order of what
happens for each task):
cc @shivaram @etrain
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kayousterhout/spark-1 SPARK-3983
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/2832.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 #2832
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commit 81fb86b5ca0344d82cba3f3f3c0cc76992393a57
Author: Kay Ousterhout <[email protected]>
Date: 2014-10-17T01:05:28Z
[SPARK-3984] [SPARK-3983] Improve UI task metrics.
This commit fixes the scheduler delay in the UI (which previously
included things that are not scheduler delay, like time to
deserialize the task and serialize the result), and also
adds finer-grained information to the summary table for each
stage about task launch overhead (which is useful for debugging
performance of short jobs, where the overhead is not-insignificant).
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