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Posted to issues@hbase.apache.org by "Clara Xiong (Jira)" <ji...@apache.org> on 2021/10/01 20:16:00 UTC
[jira] [Updated] (HBASE-26309) Balancer tends to move regions to
the server at the end of list
[ https://issues.apache.org/jira/browse/HBASE-26309?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Clara Xiong updated HBASE-26309:
--------------------------------
Description: When we have cohosted replicas, cohosted replica distribution has priority to region count skew. So we won't see region count getting balanced until the replicas distributed. During this time, master UI shows a drift of regions to the server at the end of list and causes significant overload. This shows a bias of random region pick and needs to be addressed. (was: When we have a cohosted regions, cohosted replica distribution has priority to region count skew. So we won't see region count getting balanced until the replicas distributed. During this time, master UI shows a drift of regions to the server at the end of list and causes significant overload. This shows a bias of random region pick and needs to be addressed.)
> Balancer tends to move regions to the server at the end of list
> ---------------------------------------------------------------
>
> Key: HBASE-26309
> URL: https://issues.apache.org/jira/browse/HBASE-26309
> Project: HBase
> Issue Type: Improvement
> Components: Balancer
> Reporter: Clara Xiong
> Assignee: Clara Xiong
> Priority: Major
>
> When we have cohosted replicas, cohosted replica distribution has priority to region count skew. So we won't see region count getting balanced until the replicas distributed. During this time, master UI shows a drift of regions to the server at the end of list and causes significant overload. This shows a bias of random region pick and needs to be addressed.
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