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https://issues.apache.org/jira/browse/HBASE-11165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14016829#comment-14016829
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Jimmy Xiang commented on HBASE-11165:
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With ZK-less region assignment, I think we can avoid the problems with ZK. We
can also remove lots of complex code that handles all kinds of race conditions.
For the first step (HBASE-11059), probably we won't see this benefit due to
compatibility. In the next step (major release after 11059), we should simplify
the state machine, remove ZK assignment event handling code and thread, test
cases that test handling simulated ZK states, etc..
> Scaling so cluster can host 1M regions and beyond (50M regions?)
> ----------------------------------------------------------------
>
> Key: HBASE-11165
> URL: https://issues.apache.org/jira/browse/HBASE-11165
> Project: HBase
> Issue Type: Brainstorming
> Reporter: stack
> Attachments: HBASE-11165.zip, Region Scalability test.pdf
>
>
> This discussion issue comes out of "Co-locate Meta And Master HBASE-10569"
> and comments on the doc posted there.
> A user -- our Francis Liu -- needs to be able to scale a cluster to do 1M
> regions maybe even 50M later. This issue is about discussing how we will do
> that (or if not 50M on a cluster, how otherwise we can attain same end).
> More detail to follow.
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