hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "stack (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-2462) Review compaction heuristic and move compaction code out so standalone and independently testable
Date Sat, 25 Feb 2012 23:23:49 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2462?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13216581#comment-13216581
] 

stack commented on HBASE-2462:
------------------------------

It likes a bunch of this has made it in but I don't see the standalone compactions part nor
the simulator.  I'm taking a look at salvaging these latter two aspects from this patch and
at least making it so we have standalone compactions (I want to look at compactions in isolation
to see if we can make them run faster; we also need to work on making it so we do less of
them but thats other issues).
                
> Review compaction heuristic and move compaction code out so standalone and independently
testable
> -------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-2462
>                 URL: https://issues.apache.org/jira/browse/HBASE-2462
>             Project: HBase
>          Issue Type: Improvement
>          Components: performance
>            Reporter: stack
>            Assignee: Jonathan Gray
>            Priority: Critical
>              Labels: moved_from_0_20_5
>
> Anything that improves our i/o profile makes hbase run smoother.  Over in HBASE-2457,
good work has been done already describing the tension between minimizing compactions versus
minimizing count of store files.  This issue is about following on from what has been done
in 2457 but also, breaking the hard-to-read compaction code out of Store.java out to a standalone
class that can be the easier tested (and easily analyzed for its performance characteristics).
> If possible, in the refactor, we'd allow specification of alternate merge sort implementations.


--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message