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Reid Chan commented on HBASE-22904: ----------------------------------- Nice catch! I have one thought, for discussion, about the fix, what about including QuotaManager in master's initialization check. That means after {{master.checkInitialized()}}, {{QuotaManager}} can't be null. (I'm just not a fan of null check) > NPE occurs when RS send space quota usage report during HMaster init > -------------------------------------------------------------------- > > Key: HBASE-22904 > URL: https://issues.apache.org/jira/browse/HBASE-22904 > Project: HBase > Issue Type: Bug > Reporter: Pankaj Kumar > Assignee: Pankaj Kumar > Priority: Minor > > During HMaster failover, if RegionServer send space quota report to HMaster > and MasterQuotaManager is not yet initialized then NPE will occur. > https://github.com/apache/hbase/blob/767bb1511285ae67dae15e8a2aab62c38244c797/hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterRpcServices.java#L2229 -- This message was sent by Atlassian Jira (v8.3.2#803003)