Duo Zhang created HBASE-24490:
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Summary: Revisit onlineRegions and onlineRegionsLock in
HRegionServer
Key: HBASE-24490
URL: https://issues.apache.org/jira/browse/HBASE-24490
Project: HBase
Issue Type: Task
Components: regionserver
Reporter: Duo Zhang
The onlineRegionsLock is only used in closeMetaTableRegions and
closeUserRegions, and only writeLock is used so I wonder whether we can change
it to a Lock instead of ReadWriteLock.
And also, in the several getRegions method, we have synchronized
(this.onlineRegions), which is not necessary, since the onlineRegions is
already a ConcurrentMap.
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