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https://issues.apache.org/jira/browse/HBASE-25301?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sanjeet Nishad reassigned HBASE-25301:
--------------------------------------
Assignee: Sanjeet Nishad
> NPE while running balance_rsgroup if any split region is present.
> ------------------------------------------------------------------
>
> Key: HBASE-25301
> URL: https://issues.apache.org/jira/browse/HBASE-25301
> Project: HBase
> Issue Type: Bug
> Components: rsgroup
> Affects Versions: 2.2.3
> Reporter: Ajeet Rai
> Assignee: Sanjeet Nishad
> Priority: Minor
>
> NPE is thrown in below scenario:
> 1: Create rsgroup pgroup
> 2: Add two RS to pgroup
> 3: create two table with 15 region each
> 4: kill 1 RS and start again
> 5: disable t1
> 6: run balancer and balance_rsgroup 'pgroup' and observe it is working fine
> 7: now split one of the region of t2
> 8: run balance_rsgroup 'pgroup' and observe NPE:
>
> ERROR: java.io.IOException
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:517)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:133)
> at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:338)
> at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:318)
> Caused by: java.lang.NullPointerException
> at java.util.TreeMap.put(TreeMap.java:563)
> at
> org.apache.hadoop.hbase.rsgroup.RSGroupBasedLoadBalancer.correctAssignments(RSGroupBasedLoadBalancer.java:347)
> at
> org.apache.hadoop.hbase.rsgroup.RSGroupBasedLoadBalancer.balanceCluster(RSGroupBasedLoadBalancer.java:140)
> at
> org.apache.hadoop.hbase.rsgroup.RSGroupAdminServer.balanceRSGroup(RSGroupAdminServer.java:531)
> at
> org.apache.hadoop.hbase.rsgroup.RSGroupAdminEndpoint$RSGroupAdminServiceImpl.balanceRSGroup(RSGroupAdminEndpoint.java:302)
> at
> org.apache.hadoop.hbase.protobuf.generated.RSGroupAdminProtos$RSGroupAdminService.callMethod(RSGroupAdminProtos.java:16306)
> at
> org.apache.hadoop.hbase.master.MasterRpcServices.execMasterService(MasterRpcServices.java:1023)
> at
> org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:458)
>
>
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