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https://issues.apache.org/jira/browse/HBASE-4119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13068835#comment-13068835
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Todd Lipcon commented on HBASE-4119:
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bq. On the fly we'd support moving cfs between locality groups?
As I understand it, this is done in BigTable only when new files are written.
So, if a CF is moved from one LG to another, reads continue to look at both
LGs, while any new flushes/compaction results put the new data in the new LG.
Once all data has been re-written, the migration is complete.
> Ability to add column families without disabling the table
> ----------------------------------------------------------
>
> Key: HBASE-4119
> URL: https://issues.apache.org/jira/browse/HBASE-4119
> Project: HBase
> Issue Type: Improvement
> Components: master, regionserver
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
>
> Support adding a new column family for a table without disabling the table.
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