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https://issues.apache.org/jira/browse/HBASE-25099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17202189#comment-17202189
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Duo Zhang commented on HBASE-25099:
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Found this problem when implementing HBASE-24950. In the past we do not need to
deal with meta split and merge, so there is no problem to get the replica
number directly from TableDescriptor but it does not work for meta as the
replica number is in Configuration...
> Change meta replica number by altering meta table descriptor
> ------------------------------------------------------------
>
> Key: HBASE-25099
> URL: https://issues.apache.org/jira/browse/HBASE-25099
> Project: HBase
> Issue Type: Improvement
> Components: meta, read replicas
> Reporter: Duo Zhang
> Priority: Major
>
> As now we support altering meta table, it will be better to also deal with
> changing meta replica number using altering meta, i.e, we could unify the
> logic in MasterMetaBootstrap to ModifyTableProcedure, and another benefit is
> that we do not need to restart master when changing the replica number for
> meta.
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