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https://issues.apache.org/jira/browse/HBASE-11059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14025946#comment-14025946
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Mikhail Antonov commented on HBASE-11059:
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[~jxiang] the performance improvement is pretty amazing! Let me look at the
patch (I looked at v1 before, I assume I can look v1->v3 now?)
bq. So that we can clean up quite some ZK assignment code in 2.0. In the
meantime, we can maintain a rolling upgrade path.
Do you think we could finish that transition in like 1.1 or it would have to
wait till 2.0?
Also regarding release notes..I'd say that if we can't enforce that people
migrate off ZK during rolling upgrade (to be discussed more?), then at least it
needs to be worded in release notes in the way like it's _strictly_ advised
thing to do, and a note that the old way will be removed soon. What do you
think?
> 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
> Fix For: 0.99.0
>
> Attachments: hbase-11059.patch, hbase-11059_v2.1.patch,
> hbase-11059_v2.patch, zk-less_am.pdf
>
>
> 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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