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https://issues.apache.org/jira/browse/HADOOP-1391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12497061
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Jim Kellerman commented on HADOOP-1391:
---------------------------------------

Bigtable applies attributes on a per column basis. For example, the number of 
versions kept for a column family, access control, compression are all per 
column family attributes. Currently max versions is a per table attribute in 
HBase. Since we are going to be modifying table and column descriptions for 
this set of enhancements, we should take this opportunity to make max versions 
a per column attribute as well.


> HBase administration
> --------------------
>
>                 Key: HADOOP-1391
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1391
>             Project: Hadoop
>          Issue Type: New Feature
>          Components: contrib/hbase
>            Reporter: Jim Kellerman
>         Assigned To: Jim Kellerman
>            Priority: Minor
>
> Enhance HBase administration API
> - Add/delete column to existing table
> - Take table off-line, put it on-line
> - RECORD, BLOCK or NO compression
> - Merge two regions

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