GitHub user vanzin opened a pull request:
https://github.com/apache/spark/pull/14943
[SPARK-15891][yarn] Clean up some logging in the YARN AM.
To make the log file more readable, rework some of the logging done
by the AM:
- log executor command / env just once, since they're all almost the same;
the information that changes, such as executor ID, is already available
in other log messages.
- avoid printing logs when nothing happens, especially when updating the
container requests in the allocator.
- print fewer log messages when requesting many unlocalized executors,
instead of repeating the same message multiple times.
- removed some logs that seemed unnecessary.
In the process, I slightly fixed up the wording in a few log messages, and
did some minor clean up of method arguments that were redundant.
Tested by running existing unit tests, and analyzing the logs of an
application that exercises dynamic allocation by forcing executors
to be allocated and be killed in waves.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/vanzin/spark SPARK-15891
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14943.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 #14943
----
commit ef0c058a48fe021d347100e26f56e9835c236ac8
Author: Marcelo Vanzin <van...@cloudera.com>
Date: 2016-09-02T00:36:23Z
[SPARK-15891][yarn] Clean up some logging in the YARN AM.
To make the log file more readable, rework some of the logging done
by the AM:
- log executor command / env just once, since they're all almost the same;
the information that changes, such as executor ID, is already available
in other log messages.
- avoid printing logs when nothing happens, especially when updating the
container requests in the allocator.
- print fewer log messages when requesting many unlocalized executors,
instead of repeating the same message multiple times.
- removed some logs that seemed unnecessary.
In the process, I slightly fixed up the wording in a few log messages, and
did some minor clean up of method arguments that were redundant.
Tested by running existing unit tests, and analyzing the logs of an
application that exercises dynamic allocation by forcing executors
to be allocated and be killed in waves.
----
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