stack created HBASE-21078:
-----------------------------
Summary: [amv2] CODE-BUG NPE in RTP doing Unassign
Key: HBASE-21078
URL: https://issues.apache.org/jira/browse/HBASE-21078
Project: HBase
Issue Type: Bug
Components: amv2
Affects Versions: 2.0.1
Reporter: stack
Assignee: stack
Fix For: 2.0.2
Saw this is a run against tip of branch-2.0. The region had just finished being
split when the move goes to run.
{code}
2018-08-18 16:55:14,908 INFO [PEWorker-2] procedure2.ProcedureExecutor:
Finished pid=2028, state=SUCCESS, hasLock=false; SplitTableRegionProcedure
table=IntegrationTestBigLinkedList, parent=c3f199b5af62ae2ff8f8b6426b21d95d,
daughterA=31ccbf098ae615ce30f28ec84c956b8f,
daughterB=1890b4c96736f223f31efef11c817c90 in 9.0090sec
2018-08-18 16:55:14,908 INFO [PEWorker-16] procedure.MasterProcedureScheduler:
pid=2038, ppid=2030, state=RUNNABLE:MOVE_REGION_UNASSIGN, hasLock=false;
MoveRegionProcedure hri=c3f199b5af62ae2ff8f8b6426b21d95d,
source=ve0540.halxg.cloudera.com,16020,1534632630737,
destination=ve0540.halxg.cloudera.com,16020,1534632630737 checking lock on
c3f199b5af62ae2ff8f8b6426b21d95d
2018-08-18 16:55:14,958 INFO [PEWorker-16] procedure2.ProcedureExecutor:
Initialized subprocedures=[{pid=2095, ppid=2038,
state=RUNNABLE:REGION_TRANSITION_DISPATCH, hasLock=false; UnassignProcedure
table=IntegrationTestBigLinkedList, region=c3f199b5af62ae2ff8f8b6426b21d95d,
server=ve0540.halxg.cloudera.com,16020,1534632630737}]
2018-08-18 16:55:15,008 INFO [PEWorker-3] procedure.MasterProcedureScheduler:
pid=2095, ppid=2038, state=RUNNABLE:REGION_TRANSITION_DISPATCH, hasLock=false;
UnassignProcedure table=IntegrationTestBigLinkedList,
region=c3f199b5af62ae2ff8f8b6426b21d95d,
server=ve0540.halxg.cloudera.com,16020,1534632630737 checking lock on
c3f199b5af62ae2ff8f8b6426b21d95d
2018-08-18 16:55:15,085 ERROR [PEWorker-3] procedure2.ProcedureExecutor:
CODE-BUG: Uncaught runtime exception: pid=2095, ppid=2038,
state=RUNNABLE:REGION_TRANSITION_DISPATCH, hasLock=true; UnassignProcedure
table=IntegrationTestBigLinkedList, region=c3f199b5af62ae2ff8f8b6426b21d95d,
server=ve0540.halxg.cloudera.com,16020,1534632630737
java.lang.NullPointerException
at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
at
org.apache.hadoop.hbase.master.assignment.RegionStates.getOrCreateServer(RegionStates.java:1097)
at
org.apache.hadoop.hbase.master.assignment.RegionStates.addRegionToServer(RegionStates.java:1125)
at
org.apache.hadoop.hbase.master.assignment.AssignmentManager.markRegionAsClosing(AssignmentManager.java:1477)
at
org.apache.hadoop.hbase.master.assignment.UnassignProcedure.updateTransition(UnassignProcedure.java:204)
at
org.apache.hadoop.hbase.master.assignment.RegionTransitionProcedure.execute(RegionTransitionProcedure.java:345)
at
org.apache.hadoop.hbase.master.assignment.RegionTransitionProcedure.execute(RegionTransitionProcedure.java:97)
at org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:873)
at
org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:1556)
at
org.apache.hadoop.hbase.procedure2.ProcedureExecutor.executeProcedure(ProcedureExecutor.java:1344)
at
org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$900(ProcedureExecutor.java:76)
at
org.apache.hadoop.hbase.procedure2.ProcedureExecutor$WorkerThread.run(ProcedureExecutor.java:1854)
{code}
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