[jira] [Created] (ACCUMULO-875) add list compactions command to shell

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

Keith Turner created ACCUMULO-875:
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             Summary: add list compactions command to shell
                 Key: ACCUMULO-875
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-875
             Project: Accumulo
          Issue Type: New Feature
            Reporter: Keith Turner
             Fix For: 1.5.0


The shell currently has a list scans command which is very useful for debugging.  Another command that would be useful is list compactions.   

The things that would be useful to know about a running compaction are the following :
 
 * Tablet server
 * Age
 * State (if showing queued compactions)
 * Type (User, Chop, System, Idle)
 * Tablet
 * Iterator info (iterators could have changed since it started and there are per compaction iterators)
 * Input files
 * Output file
 * Rate
 * Key/values read so far (could do bytes also)
 * Key/values written so far (could do bytes also)
 * Locality group compacting

Could consider using JMX to collect this info from tablet servers.   List scans currently uses a thrift call to get its info from tablet servers.   Making the info available via JMX would enable other tools to use the information. 

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