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https://issues.apache.org/jira/browse/HBASE-26618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Huaxiang Sun resolved HBASE-26618.
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Fix Version/s: 2.5.0
3.0.0-alpha-3
2.4.12
Release Note: When META replica LoadBalance mode is enabled at
client-side, clients will try to read from one META region first. If META
location is from any non-primary META regions, in case of errors, it will fall
back to the primary META region.
Resolution: Fixed
> Involving primary meta region in meta scan with
> CatalogReplicaLoadBalanceSimpleSelector
> ---------------------------------------------------------------------------------------
>
> Key: HBASE-26618
> URL: https://issues.apache.org/jira/browse/HBASE-26618
> Project: HBase
> Issue Type: Improvement
> Components: meta replicas
> Affects Versions: 2.4.9
> Reporter: Huaxiang Sun
> Assignee: Huaxiang Sun
> Priority: Minor
> Fix For: 2.5.0, 3.0.0-alpha-3, 2.4.12
>
>
> In the current release with Meta replica LoadBalance mode, the primary meta
> region is not serving the meta scan (only meta replica region serves the
> read). When the result from meta replica region is stale, it will go to
> primary meta region for up-to-date location.
> From our experience, the primary meta region serves very less read traffic,
> so it will be better to load balance read traffic across the primary meta
> region as well.
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