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https://issues.apache.org/jira/browse/HBASE-18070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17232509#comment-17232509
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Huaxiang Sun commented on HBASE-18070:
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I have different opinion here. This meta replica Load Balance mode should
increase throughput as well. The previous design is for High availability, so
it is not for throughput. In this new mode, load balance is introduced so read
is offloaded mostly from primary meta and distributed among multiple meta
replica regions. In case of the newly PE test, all location data is static, so
if there are enough clients does location lookup, it could exhaust the
non-meta-replica region server, with meta replica LB, it can support n(replica
regon #) * read requests/second.
With that said, the PE test should not increase primary read numbers at all
(there is no fall-back-to-primary path in the test), I will take a look
tomorrow to see why there are so many reads going through the primary meta
region, could be something wrong in the path.
> Enable memstore replication for meta replica
> --------------------------------------------
>
> Key: HBASE-18070
> URL: https://issues.apache.org/jira/browse/HBASE-18070
> Project: HBase
> Issue Type: New Feature
> Reporter: Hua Xiang
> Assignee: Huaxiang Sun
> Priority: Critical
> Fix For: 3.0.0-alpha-1, 2.4.0, HBASE-18070, HBASE-18070.branch-2
>
>
> Based on the current doc, memstore replication is not enabled for meta
> replica. Memstore replication will be a good improvement for meta replica.
> Create jira to track this effort (feasibility, design, implementation, etc).
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