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https://issues.apache.org/jira/browse/HBASE-3909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13879429#comment-13879429
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binlijin commented on HBASE-3909:
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bq. Does this imply that this region needs re-opening because many parameters
take effect at the time of region open ?
No，the region should not re-opening，not all parameters will dynamic take
effect, we choose some of them.
> Add dynamic config
> ------------------
>
> Key: HBASE-3909
> URL: https://issues.apache.org/jira/browse/HBASE-3909
> Project: HBase
> Issue Type: New Feature
> Reporter: stack
> Assignee: Subbu M Iyer
> Attachments: 3909-102812.patch, 3909-102912.patch, 3909-v1.patch,
> 3909.v1, 3909_090712-2.patch, HBASE-3909-backport-from-fb-for-trunk.patch,
> HBase Cluster Config Details.xlsx, patch-v2.patch, testMasterNoCluster.stack
>
>
> I'm sure this issue exists already, at least as part of the discussion around
> making online schema edits possible, but no hard this having its own issue.
> Ted started a conversation on this topic up on dev and Todd suggested we
> lookd at how Hadoop did it over in HADOOP-7001
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