[
https://issues.apache.org/jira/browse/YARN-4371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15092806#comment-15092806
]
Jason Lowe commented on YARN-4371:
----------------------------------
It's not very helpful to say "Application doesn't exist in RM." and not report
which one(s) they are. If someone was looking at this exception it would be
lacking critical info. Since the caller is simply ignoring the exception
anyway, wouldn't it be simpler to just have the kill code ignore the missing
applications and remove the try clause from the caller?
I think there's also an issue where the user can specify multiple arguments and
the command will silently ignore their requests. For example:
{{yarn application -appStates RUNNING -kill app1 app2 app3}}
Since we're no longer checking for a specific number of arguments, I think the
user can throw in all sorts of other options that will be silently ignored,
probably to the surprise of the user.
Side note: it's a little weird to see app IDs as direct arguments to the kill
option. In typical UNIX command-line processing the kill option would simply
be a boolean flag option with no associated value, and the non-option arguments
at the end of the command-line would be the application IDs to process based on
the previous options specified, hence why space-separated is what I would
expect for that app list. Not a must-fix, I just find it odd.
> "yarn application -kill" should take multiple application ids
> -------------------------------------------------------------
>
> Key: YARN-4371
> URL: https://issues.apache.org/jira/browse/YARN-4371
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Tsuyoshi Ozawa
> Assignee: Sunil G
> Attachments: 0001-YARN-4371.patch, 0002-YARN-4371.patch,
> 0003-YARN-4371.patch
>
>
> Currently we cannot pass multiple applications to "yarn application -kill"
> command. The command should take multiple application ids at the same time.
> Each entries should be separated with whitespace like:
> {code}
> yarn application -kill application_1234_0001 application_1234_0007
> application_1234_0012
> {code}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
