[jira] [Created] (ACCUMULO-4166) Limit compactions per tserver

["Keith Turner (JIRA)" <ji...@apache.org>]

Keith Turner created ACCUMULO-4166:
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             Summary: Limit compactions per tserver
                 Key: ACCUMULO-4166
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4166
             Project: Accumulo
          Issue Type: Improvement
            Reporter: Keith Turner
             Fix For: 1.8.0


For user initiated compactions, I would like to be able to limit the number of threads that run compactions on each tablet server.  My use case is that for Fluo tables I need to periodically compact ranges of a table to garbage collect Fluo transactional data.  However, I would like these compactions to have minimal impact.

Being able to do the following would be nice, where the {{-m}} options is the max number of compactions to run on any tablet server.

{noformat}
   compact -t myTable  -b p: -e p:~  -m 1
{noformat}

Thinking the best implementation would be to push this information to the tablet server and let it manage, rather than having the master try to coordinate.



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