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From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-15134) Add visibility into Flush and Compaction queues
Date Wed, 20 Jan 2016 07:54:39 GMT
Elliott Clark created HBASE-15134:
-------------------------------------

             Summary: Add visibility into Flush and Compaction queues
                 Key: HBASE-15134
                 URL: https://issues.apache.org/jira/browse/HBASE-15134
             Project: HBase
          Issue Type: Bug
            Reporter: Elliott Clark


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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