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https://issues.apache.org/jira/browse/HBASE-11059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13981153#comment-13981153
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Jimmy Xiang commented on HBASE-11059:
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I don't have a writeup yet. Currently, I was thinking to make sure region
assignment works without ZK to simplify the state machine, improve the
assignment performance, make it more reliable, so that we can support more
regions, and do HA a little bit easier later on. As to pin some system tables
to somewhere, like the active master, it's been done in a different issue.
For backward compatibility, the ZK part will still be there for a while. Yes,
it should be of some help.
> ZK-less region assignment
> -------------------------
>
> Key: HBASE-11059
> URL: https://issues.apache.org/jira/browse/HBASE-11059
> Project: HBase
> Issue Type: Improvement
> Components: master, Region Assignment
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
>
> It seems that most people don't like region assignment with ZK (HBASE-5487),
> which causes many uncertainties. This jira is to support ZK-less region
> assignment. We need to make sure this patch doesn't break backward
> compatibility/rolling upgrade.
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