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https://issues.apache.org/jira/browse/HBASE-15134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Abhishek Singh Chouhan updated HBASE-15134:
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    Attachment: HBASE-15134.master.002.patch

Fixing whitespace errors and getting another QA

> Add visibility into Flush and Compaction queues
> -----------------------------------------------
>
>                 Key: HBASE-15134
>                 URL: https://issues.apache.org/jira/browse/HBASE-15134
>             Project: HBase
>          Issue Type: New Feature
>          Components: Compaction, metrics, regionserver
>            Reporter: Elliott Clark
>            Assignee: Abhishek Singh Chouhan
>         Attachments: HBASE-15134.master.001.patch, 
> HBASE-15134.master.002.patch, HBASE-15134.patch, HBASE-15134.patch
>
>
> On busy spurts we can see regionservers start to see large queues for 
> compaction. It's really hard to tell if the server is queueing a lot of 
> compactions for the same region, lots of compactions for lots of regions, or 
> just falling behind.
> For flushes much the same. There can be flushes in queue that aren't being 
> run because of delayed flushes. There's no way to know from the metrics how 
> many flushes are for each region, how many are delayed. Etc.
> We should add either more metrics around this ( num per region, max per 
> region, min per region ) or add on a UI page that has the list of compactions 
> and flushes.
> Or both.



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