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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9466) Read-only mode
Date Mon, 16 Sep 2013 18:47:05 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13768606#comment-13768606
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Jean-Daniel Cryans commented on HBASE-9466:
-------------------------------------------

[~fenghh] see what Andrew said regarding enabling/disabling (but online altering still requires
closing the regions, flushing, etc).

If we do go down the patch flipping switches, I'm with Stack here. We'll need a generic framework
for doing this. One could envision changing a lot more things live than just read-only, but
we don't have to implement them all right away. Yours would be the first implemented use case.
                
> Read-only mode
> --------------
>
>                 Key: HBASE-9466
>                 URL: https://issues.apache.org/jira/browse/HBASE-9466
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Feng Honghua
>            Priority: Minor
>
> Can we provide a read-only mode for a table? write to the table in read-only mode will
be rejected, but read-only mode is different from disable in that:
> 1. it doesn't offline the regions of the table(hence much more lightweight than disable)
> 2. it can serve read requests
> Comments?

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