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https://issues.apache.org/jira/browse/YARN-3294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14371884#comment-14371884
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Jian He commented on YARN-3294:
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Thanks for updating the patch, looks good overall,
- how about passing the ‘logHierarchy’ as a parameter too ? so that the web
service also work for user-provided class name, may be also take in
dumpLocation as a parameter too ?
{code}
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
public String dumpSchedulerLogs(String time) throws IOException {
{code}
- question - wondering whether we need the “@QueryParam” for the 'time'
parameter, as other some other places in the same file do, e.g. getApps;
- if no permission for RM to write logs, will the webService throw error ?
- {{new File(System.getProperty("hadoop.log.dir"), targetFilename);}}, should
this be “yarn.log.dir” ?
- {{return "Capacity scheduler logs are being created.";}} it should probably
return JAXB formatted response. The response seems broken if I directly access
the web service from my browser
- AdHocLogDumper#appenderLevels - entry is never removed from the map, is this
excepted?
> Allow dumping of Capacity Scheduler debug logs via web UI for a fixed time
> period
> ---------------------------------------------------------------------------------
>
> Key: YARN-3294
> URL: https://issues.apache.org/jira/browse/YARN-3294
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: capacityscheduler
> Reporter: Varun Vasudev
> Assignee: Varun Vasudev
> Attachments: Screen Shot 2015-03-12 at 8.51.25 PM.png,
> apache-yarn-3294.0.patch, apache-yarn-3294.1.patch, apache-yarn-3294.2.patch,
> apache-yarn-3294.3.patch
>
>
> It would be nice to have a button on the web UI that would allow dumping of
> debug logs for just the capacity scheduler for a fixed period of time(1 min,
> 5 min or so) in a separate log file. It would be useful when debugging
> scheduler behavior without affecting the rest of the resourcemanager.
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