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From "Manukranth Kolloju (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12147) Porting Online Config Change from 89-fb
Date Mon, 13 Oct 2014 22:48:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14170152#comment-14170152
] 

Manukranth Kolloju commented on HBASE-12147:
--------------------------------------------

After this, the next patch would be to provide a strategy to trigger this config change. I
had 2 options, 
1) Provide an end point to let the regionserver know that it has to reload its config. 
2) Let regionserver periodically check if the configuration has changes and trigger the configuration
change when it detects that it happened. 

Option 2 would be simpler to implement, but I feel that option 1 would be more safe and gives
the admin more control. Will put up a patch for this idea shortly. 

> Porting Online Config Change from 89-fb
> ---------------------------------------
>
>                 Key: HBASE-12147
>                 URL: https://issues.apache.org/jira/browse/HBASE-12147
>             Project: HBase
>          Issue Type: Sub-task
>    Affects Versions: 1.0.0
>            Reporter: Manukranth Kolloju
>            Assignee: Manukranth Kolloju
>             Fix For: 1.0.0
>
>         Attachments: 0001-Online-config-change.patch, 0001-Online-config-change.patch,
0001-Online-config-change.patch, 0001-Online-config-change.patch, 0001-Online-config-change.patch,
0001-Online-config-change.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> This jira is to track the forward port of HBASE-8805 and HBASE-8544 implemented by [~gaurav.menghani]
in 89-fb. This improves operational efficiency in managing clusters that are serving production
traffic.



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