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https://issues.apache.org/jira/browse/HBASE-3149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13214382#comment-13214382
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Lars Hofhansl commented on HBASE-3149:
--------------------------------------

Thanks for explaining Nicolas.
I wonder if a good default would be some fraction of the flushsize. Maybe 
1/4*flushsize, or something.
                
> 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: Nicolas Spiegelberg
>            Priority: Critical
>             Fix For: 0.92.1
>
>
> 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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