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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11319) No need to use favored node mapping initialization to find all regions
Date Wed, 18 Jun 2014 03:29:02 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14034763#comment-14034763
] 

stack commented on HBASE-11319:
-------------------------------

Looks great Jimmy. +1

> No need to use favored node mapping initialization to find all regions
> ----------------------------------------------------------------------
>
>                 Key: HBASE-11319
>                 URL: https://issues.apache.org/jira/browse/HBASE-11319
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>            Priority: Minor
>         Attachments: hbase-11319.patch, hbase-11319_v2.patch, hbase-11319_v3.1.patch,
hbase-11319_v3.patch
>
>
> During a clean re/start, favored node mapping initialization scans meta for an assignment
snapshot. We can avoid this scan since such info is already loaded into region states. For
small cluster, this is not a big deal. However, if there are lots of regions, the scan is
better not to do.



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