GitHub user davies opened a pull request:
https://github.com/apache/spark/pull/1776
[WIP] [SPARK-2655] Change logging level from INFO to DEBUG
Currently, it's too noisy at the default level INFO, so it's better to put
the logging about runtime details into DEBUG level.
Basic rule is that, DEBUG is used for developer or debugging, INFO is used
for user (who does not know much of the details). So if some loggings do not
provide helpful messages for users, it should be put in DEBUG level.
The progress of Job/stage/task is helpful for user, should be keep in INFO
level. (It will be better to put all messages of task completeness into one
line, not addressed in this PR)
The logging level in third-parties should be set to WARN by default.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/davies/spark log
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/1776.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 #1776
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commit 78d08343d35ca17df9c2d1956b4065e35680482b
Author: Davies Liu <[email protected]>
Date: 2014-08-04T18:31:25Z
use WARN as default logging level in log4j
commit 086b55ec608b513555c8c037a17477453560931b
Author: Davies Liu <[email protected]>
Date: 2014-08-04T19:37:13Z
change logging level from INFO to DEBUG
commit d03d6075dca9d73f5aab4c3da267330adf9002ba
Author: Davies Liu <[email protected]>
Date: 2014-08-05T00:06:04Z
change log level to DEBUG
commit ce7f3c2e41d4690fc5b63e517ff24ec3f0eeb4eb
Author: Davies Liu <[email protected]>
Date: 2014-08-05T00:57:24Z
rollback default logging level to INFO
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