Elliott Clark created HBASE-15134:
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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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