Huaxiang Sun created HBASE-26649:
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Summary: Support meta replica LoadBalance mode for
RegionLocator#getAllRegionLocations()
Key: HBASE-26649
URL: https://issues.apache.org/jira/browse/HBASE-26649
Project: HBase
Issue Type: Improvement
Components: meta replicas
Affects Versions: 2.4.9
Reporter: Huaxiang Sun
Assignee: Huaxiang Sun
When HBase application restarts, its meta cache is empty. Normally, it will
fill the meta cache one region at a time by scanning the meta region. This will
cause huge pressure to the region server hosting meta during application
restart.
It can prefetching all region locations by calling
RegionLocator#getAllRegionLocations().Meta replica LoadBalance mode is support
in 2.4, it will be nice to load balance RegionLocator#getAllRegionLocations()
to all meta replica regions so batch scan can spread across all meta replica
regions.
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