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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3149) Make flush decisions per column family
Date Wed, 18 Dec 2013 19:19:11 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13852042#comment-13852042
] 

stack commented on HBASE-3149:
------------------------------

[~gaurav.menghani] Gaurav, have you deployed this change?  If so, what do you see in operation?
 When you talk about different heuristics, what you thinking?  Thanks boss.

> Make flush decisions per column family
> --------------------------------------
>
>                 Key: HBASE-3149
>                 URL: https://issues.apache.org/jira/browse/HBASE-3149
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Karthik Ranganathan
>            Assignee: Gaurav Menghani
>            Priority: Critical
>             Fix For: 0.89-fb
>
>         Attachments: 3149-trunk-v1.txt, Per-CF-Memstore-Flush.diff
>
>
> Today, the flush decision is made using the aggregate size of all column families. When
large and small column families co-exist, this causes many small flushes of the smaller CF.
We need to make per-CF flush decisions.



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