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https://issues.apache.org/jira/browse/HBASE-18070?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Stack updated HBASE-18070:
----------------------------------
    Fix Version/s:     (was: 2.5.0)
                   2.4.0
     Hadoop Flags: Reviewed
     Release Note: 
"Async WAL Replication" [1] was added by HBASE-11183 "Timeline Consistent 
region replicas - Phase 2 design" but only for user-space tables. This feature 
adds "Async WAL Replication" for the hbase:meta table.  It also adds a client 
'LoadBalance' mode that has reads go to replicas first and to the primary only 
on fail so as to shed read load from the primary to alleviate *hotspotting* on 
the hbase:meta Region.

Configuration is as it was for the user-space 'Async WAL Replication'. See [2] 
and [3] for details on how to enable.

1. http://hbase.apache.org/book.html#async.wal.replication
2. http://hbase.apache.org/book.html#async.wal.replication.meta
3. 
http://hbase.apache.org/book.html#_async_wal_replication_for_meta_table_as_of_hbase_2_4_0
           Labels: read-replicas  (was: )

> 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
>              Labels: read-replicas
>             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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