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https://issues.apache.org/jira/browse/HBASE-11165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14120953#comment-14120953
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Mikhail Antonov commented on HBASE-11165:
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[~toffer] thinking about that more..meta table size isn't what limits you now,
is it? 1M regions is estimated to take up about 3-4Gb of space (7Gb is
mentioned in last doc, for 10 last versions kept for meta), which should
comfortably fit in memory of any single machine. So bottleneck isn't memory,
but CPU, due to (possibly) overly coarse-grained locking, is that what it looks
like?..
> 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,
> zk_less_assignment_comparison_2.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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