[jira] [Commented] (HBASE-26649) Support meta replica LoadBalance mode for RegionLocator#getAllRegionLocations()

["Hudson (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-26649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17545647#comment-17545647 ] 

Hudson commented on HBASE-26649:
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> Support meta replica LoadBalance mode for RegionLocator#getAllRegionLocations()
> -------------------------------------------------------------------------------
>
>                 Key: HBASE-26649
>                 URL: https://issues.apache.org/jira/browse/HBASE-26649
>             Project: HBase
>          Issue Type: Improvement
>          Components: meta replicas
>    Affects Versions: 2.4.9
>            Reporter: Huaxiang Sun
>            Assignee: Huaxiang Sun
>            Priority: Major
>
> When HBase application restarts, its meta cache is empty. Normally, it will fill the meta cache one region at a time by scanning the meta region. This will cause huge pressure to the region server hosting meta during application restart. 
> It can prefetching all region locations by calling RegionLocator#getAllRegionLocations().Meta replica LoadBalance mode is support in 2.4, it will be nice to load balance RegionLocator#getAllRegionLocations() to all meta replica regions so batch scan can spread across all meta replica regions.



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