[jira] Resolved: (HBASE-700) hbase.io.index.interval need be configuratable in column family

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

     [ https://issues.apache.org/jira/browse/HBASE-700?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack resolved HBASE-700.
-------------------------

       Resolution: Fixed
    Fix Version/s: 0.2.0

Resolved as part of HBASE-62.  Thanks for the patch Andrew.

> hbase.io.index.interval need be configuratable in column family 
> ----------------------------------------------------------------
>
>                 Key: HBASE-700
>                 URL: https://issues.apache.org/jira/browse/HBASE-700
>             Project: Hadoop HBase
>          Issue Type: Improvement
>          Components: regionserver
>    Affects Versions: 0.1.2
>            Reporter: LN
>            Assignee: Andrew Purtell
>            Priority: Minor
>             Fix For: 0.2.0
>
>
> setting parameter hbase.io.index.interval to smaller can improve hbase reading performance significantly, esp. in large value size column families. however, small hbase.io.index.interval cause more memory usage, because all index will read into memory when loading a mapfile.
> in my test env, i set hbase.io.index.interval to 1, after inserting about 3M samll size records to a table(about 1.5G in hadoop file), the regionserver throws OOME.  then i found total size of  map file index  is 350M.  however, i can't adjust  hbase.io.index.interval to a larger one, like 32, because other big cell size tables need it be 1.
> so, i think make hbase.io.index.interval a column family property should be very important for performance tuning. 

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