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https://issues.apache.org/jira/browse/HADOOP-9902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14105351#comment-14105351
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Allen Wittenauer commented on HADOOP-9902:
------------------------------------------
bq. yarn command usage info seems broken. e.g. "yarn application" command
earlier was printing command usage info. Now, it's throwing exception.
Looks like I missed this command line stack manipulation for ApplicationCLI:
{code}
elif [ "$COMMAND" = "application" ] ||
[ "$COMMAND" = "applicationattempt" ] ||
[ "$COMMAND" = "container" ]; then
CLASS=org.apache.hadoop.yarn.client.cli.ApplicationCLI
YARN_OPTS="$YARN_OPTS $YARN_CLIENT_OPTS"
set -- $COMMAND $@
{code}
... probably because it is a very oddball thing to do. I'll file a JIRA for
that.
bq. Starting/stopping yarn daemon doesn't print anything any more. Earlier it
was printing something like "starting resource manager..", which I think is
useful.
Putting it inside yarn-daemon.sh or anywhere else breaks the init.d script
experience for ops teams. So, if anything, this should get changed in
yarn-daemons.sh and make it more of an analog to hadoop-daemons.sh.
bq. we should open separate jiras in YARN/MR to track YARN/MR side changes, so
that it draws enough attention in YARN/MR community as well.
It's an interesting data point to note that the follow-up JIRAs for this one to
fix bugs, add a few more features, etc, are surprisingly light with watchers,
if they even have any. Probably hints as to another reason why this part of
the code base never gets fixes. It was decided early on (see above) to do this
as one big JIRA. That was still, IMO, the correct decision based upon history
and the current state.
While this was a sweeping change across all of the subprojects, all of these
individual communities should be paying attention to what is happening in
common due to the dependency structure.
> Shell script rewrite
> --------------------
>
> Key: HADOOP-9902
> URL: https://issues.apache.org/jira/browse/HADOOP-9902
> Project: Hadoop Common
> Issue Type: Improvement
> Components: scripts
> Affects Versions: 3.0.0
> Reporter: Allen Wittenauer
> Assignee: Allen Wittenauer
> Labels: releasenotes
> Fix For: 3.0.0
>
> Attachments: HADOOP-9902-10.patch, HADOOP-9902-11.patch,
> HADOOP-9902-12.patch, HADOOP-9902-13-branch-2.patch, HADOOP-9902-13.patch,
> HADOOP-9902-14.patch, HADOOP-9902-15.patch, HADOOP-9902-16.patch,
> HADOOP-9902-2.patch, HADOOP-9902-3.patch, HADOOP-9902-4.patch,
> HADOOP-9902-5.patch, HADOOP-9902-6.patch, HADOOP-9902-7.patch,
> HADOOP-9902-8.patch, HADOOP-9902-9.patch, HADOOP-9902.patch, HADOOP-9902.txt,
> hadoop-9902-1.patch, more-info.txt
>
>
> Umbrella JIRA for shell script rewrite. See more-info.txt for more details.
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