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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4213) Support instant schema updates with out master's intervention (i.e with out enable/disable and bulk assign/unassign)
Date Mon, 22 Aug 2011 20:56:29 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13089001#comment-13089001
] 

Ted Yu commented on HBASE-4213:
-------------------------------

Discussed this feature with Nileema, Stack, Karthick.
Desired characteristics include:
1. Accommodating master failover.
2. Ability for displaying progress information. This would be useful for Ops.
3. Throttling. HBASE-1730 provides the ability to ensure that only a configurable number of
regions are closed per region server at a time.

> Support instant schema updates with out master's intervention (i.e with out enable/disable
and bulk assign/unassign)
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-4213
>                 URL: https://issues.apache.org/jira/browse/HBASE-4213
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Subbu M Iyer
>            Assignee: Subbu M Iyer
>             Fix For: 0.92.0
>
>         Attachments: HBASE-4213-Instant_schema_change.patch, HBASE-4213_Instant_schema_change_-Version_2_.patch,
HBASE_Instant_schema_change-version_3_.patch
>
>
> This Jira is a slight variation in approach to what is being done as part of 
> https://issues.apache.org/jira/browse/HBASE-1730
> Support instant schema updates such as Modify Table, Add Column, Modify Column operations:
> 1. With out enable/disabling the table.
> 2. With out bulk unassign/assign of regions.

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