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https://issues.apache.org/jira/browse/HBASE-11165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14120142#comment-14120142
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Andrey Stepachev commented on HBASE-11165:
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bq.Yeah, we'll have to go this route if we are trying to keep state of a big
cluster in heap. Could work on making the representation more compact. You
arguing for single meta region Andrey Stepachev then? There is also the on-hdfs
size to consider (write-amplification) and the r/w i/os.
For sure, compact representation doesn't implicate single meta. Compact meta
allows to bother with split meta only for really big installations. But how
HDFS would handle that, as [~mantonov] mentioned above.
As for compact META representations we can use other technics to reduce HDFS
impact for big meta.
> 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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