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https://issues.apache.org/jira/browse/HBASE-3836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HBASE-3836:
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Attachment: hbase-3836.txt
Here's an implementation of the task monitoring code plus instrumentation of
some processes like master startup, compactions, etc.
I verified that this works reasonably well on a cluster.
The UI for viewing the info will come in a separate ticket.
> Add facility to track currently progressing actions/workflows
> -------------------------------------------------------------
>
> Key: HBASE-3836
> URL: https://issues.apache.org/jira/browse/HBASE-3836
> Project: HBase
> Issue Type: New Feature
> Components: master, regionserver
> Affects Versions: 0.92.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.92.0
>
> Attachments: hbase-3836.txt
>
>
> A lot of troubleshooting involves answering the question "well, what is your
> server doing right now?" Today, that involves some combination of
> interpreting jstack output and/or trudging through logs. Problems with these
> methods are: (a) users may not have direct ssh access to regionserver
> machines in production environments, (b) logs are very verbose, so hard to
> separate what's still going on vs stuff that might have completed, and (c)
> interpreting jstack requires a pretty good knowledge of the codebase plus
> diving into source code.
> I'd like to add a singleton (for now) which takes care of tracking any major
> actions going on in the region server and master.
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