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https://issues.apache.org/jira/browse/HBASE-20768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16530885#comment-16530885
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chenxu commented on HBASE-20768:
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Thank you for your reply [~apurtell], what I concerns is that If master not
Initialized, meta region will not be reassigned. In our env,
hbase.balancer.tablesOnMaster includes hbase:meta, if the active HMaster
shutdown, it will take a long time for meta region reassigned and effect the
normal access of the cluster.
> should we bypass the RegionLocationFinder#scheduleFullRefresh execution when
> master has not initialized
> -------------------------------------------------------------------------------------------------------
>
> Key: HBASE-20768
> URL: https://issues.apache.org/jira/browse/HBASE-20768
> Project: HBase
> Issue Type: Improvement
> Components: Balancer
> Reporter: chenxu
> Priority: Major
> Attachments: HBASE-20768-master-v1.patch
>
>
> Our KYLIN cluster has about 300K Regions, when master startup, It takes a
> long time to do RegionLocationFinder#scheduleFullRefresh.
> During this period, CUBE cannot be built, because master has not initialized.
> Although we can ignore locality factor through HBASE-18478, but i think it
> would be better if we bypass the RegionLocationFinder#scheduleFullRefresh
> until the master initialized
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