Details
-
Bug
-
Status: Resolved
-
Major
-
Resolution: Fixed
-
None
-
None
-
None
Description
This is what I got at first, an exception when trying to write something to meta when meta has not been onlined yet.
2018-01-07,21:03:14,389 INFO org.apache.hadoop.hbase.master.HMaster: Running RecoverMetaProcedure to ensure proper hbase:meta deploy.
2018-01-07,21:03:14,637 INFO org.apache.hadoop.hbase.master.procedure.RecoverMetaProcedure: Start pid=1, state=RUNNABLE:RECOVER_META_SPLIT_LOGS; RecoverMetaProcedure failedMetaServer=null, splitWal=true
2018-01-07,21:03:14,645 INFO org.apache.hadoop.hbase.master.MasterWalManager: Log folder hdfs://c402tst-community/hbase/c402tst-community/WALs/c4-hadoop-tst-st27.bj,38900,1515330173896 belongs to an existing region server
2018-01-07,21:03:14,646 INFO org.apache.hadoop.hbase.master.MasterWalManager: Log folder hdfs://c402tst-community/hbase/c402tst-community/WALs/c4-hadoop-tst-st29.bj,38900,1515330177232 belongs to an existing region server
2018-01-07,21:03:14,648 INFO org.apache.hadoop.hbase.master.procedure.RecoverMetaProcedure: pid=1, state=RUNNABLE:RECOVER_META_ASSIGN_REGIONS; RecoverMetaProcedure failedMetaServer=null, splitWal=true; Retaining meta assignment to server=null
2018-01-07,21:03:14,653 INFO org.apache.hadoop.hbase.procedure2.ProcedureExecutor: Initialized subprocedures=[{pid=2, ppid=1, state=RUNNABLE:REGION_TRANSITION_QUEUE; AssignProcedure table=hbase:meta, region=1588230740}]
2018-01-07,21:03:14,660 INFO org.apache.hadoop.hbase.master.procedure.MasterProcedureScheduler: pid=2, ppid=1, state=RUNNABLE:REGION_TRANSITION_QUEUE; AssignProcedure table=hbase:meta, region=1588230740 hbase:meta hbase:meta,,1.1588230740
2018-01-07,21:03:14,663 INFO org.apache.hadoop.hbase.master.assignment.AssignProcedure: Start pid=2, ppid=1, state=RUNNABLE:REGION_TRANSITION_QUEUE; AssignProcedure table=hbase:meta, region=1588230740; rit=OFFLINE, location=null; forceNewPlan=false, retain=false
2018-01-07,21:03:14,831 INFO org.apache.hadoop.hbase.zookeeper.MetaTableLocator: Setting hbase:meta (replicaId=0) location in ZooKeeper as c4-hadoop-tst-st27.bj,38900,1515330173896
2018-01-07,21:03:14,841 INFO org.apache.hadoop.hbase.master.assignment.RegionTransitionProcedure: Dispatch pid=2, ppid=1, state=RUNNABLE:REGION_TRANSITION_DISPATCH; AssignProcedure table=hbase:meta, region=1588230740; rit=OPENING, location=c4-hadoop-tst-st27.bj,38900,1515330173896
2018-01-07,21:03:14,992 INFO org.apache.hadoop.hbase.master.procedure.RSProcedureDispatcher: Using procedure batch rpc execution for serverName=c4-hadoop-tst-st27.bj,38900,1515330173896 version=3145728
2018-01-07,21:03:15,593 ERROR org.apache.hadoop.hbase.client.AsyncRequestFutureImpl: Cannot get replica 0 location for {"totalColumns":1,"row":"hbase:meta","families":{"table":[{"qualifier":"state","vlen":2,"tag":[],"timestamp":1515330195514}]},"ts":1515330195514}
2018-01-07,21:03:15,594 WARN org.apache.hadoop.hbase.master.assignment.RegionTransitionProcedure: Retryable error trying to transition: pid=2, ppid=1, state=RUNNABLE:REGION_TRANSITION_FINISH; AssignProcedure table=hbase:meta, region=1588230740; rit=OPEN, location=c4-hadoop-tst-st27.bj,38900,1515330173896
org.apache.hadoop.hbase.client.RetriesExhaustedWithDetailsException: Failed 1 action: IOException: 1 time, servers with issues: null
at org.apache.hadoop.hbase.client.BatchErrors.makeException(BatchErrors.java:54)
at org.apache.hadoop.hbase.client.AsyncRequestFutureImpl.getErrors(AsyncRequestFutureImpl.java:1250)
at org.apache.hadoop.hbase.client.HTable.batch(HTable.java:457)
at org.apache.hadoop.hbase.client.HTable.put(HTable.java:570)
at org.apache.hadoop.hbase.MetaTableAccessor.put(MetaTableAccessor.java:1450)
at org.apache.hadoop.hbase.MetaTableAccessor.putToMetaTable(MetaTableAccessor.java:1439)
at org.apache.hadoop.hbase.MetaTableAccessor.updateTableState(MetaTableAccessor.java:1785)
at org.apache.hadoop.hbase.MetaTableAccessor.updateTableState(MetaTableAccessor.java:1151)
at org.apache.hadoop.hbase.master.TableStateManager.udpateMetaState(TableStateManager.java:183)
at org.apache.hadoop.hbase.master.TableStateManager.setTableState(TableStateManager.java:69)
at org.apache.hadoop.hbase.master.assignment.AssignmentManager.markRegionAsOpened(AssignmentManager.java:1515)
at org.apache.hadoop.hbase.master.assignment.AssignProcedure.finishTransition(AssignProcedure.java:271)
at org.apache.hadoop.hbase.master.assignment.RegionTransitionProcedure.execute(RegionTransitionProcedure.java:320)
at org.apache.hadoop.hbase.master.assignment.RegionTransitionProcedure.execute(RegionTransitionProcedure.java:86)
at org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:845)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:1456)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.executeProcedure(ProcedureExecutor.java:1225)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$800(ProcedureExecutor.java:78)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor$WorkerThread.run(ProcedureExecutor.java:1735)
And then I got repeated exception like this infinitely
2018-01-07,21:03:15,596 WARN org.apache.hadoop.hbase.master.assignment.RegionTransitionProcedure: Retryable error trying to transition: pid=2, ppid=1, state=RUNNABLE:REGION_TRANSITION_FINISH; AssignProcedure table=hbase:meta, region=1588230740; rit=OPEN, location=c4-hadoop-tst-st27.bj,38900,1515330173896
org.apache.hadoop.hbase.exceptions.UnexpectedStateException: Expected [OFFLINE, CLOSED, SPLITTING, SPLIT, OPENING, FAILED_OPEN] so could move to OPEN but current state=OPEN
at org.apache.hadoop.hbase.master.assignment.RegionStates$RegionStateNode.transitionState(RegionStates.java:155)
at org.apache.hadoop.hbase.master.assignment.AssignmentManager.markRegionAsOpened(AssignmentManager.java:1513)
at org.apache.hadoop.hbase.master.assignment.AssignProcedure.finishTransition(AssignProcedure.java:271)
at org.apache.hadoop.hbase.master.assignment.RegionTransitionProcedure.execute(RegionTransitionProcedure.java:320)
at org.apache.hadoop.hbase.master.assignment.RegionTransitionProcedure.execute(RegionTransitionProcedure.java:86)
at org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:845)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:1456)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.executeProcedure(ProcedureExecutor.java:1225)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$800(ProcedureExecutor.java:78)
at org.apache.hadoop.hbase.procedure2.ProcedureExecutor$WorkerThread.run(ProcedureExecutor.java:1735)
This is a bit strange. Since we are assigning meta, why we need to write the state to meta table?
I checked the code a bit.
In AssignProcedure.finishTransition, we will do this
env.getAssignmentManager().markRegionAsOpened(regionNode);
And in AssignmentManager.markRegionAsOpened, we will do this
if (isMetaRegion(hri)) {
master.getTableStateManager().setTableState(TableName.META_TABLE_NAME,
TableState.State.ENABLED);
setMetaInitialized(hri, true);
}
And in TableStateManager.setTableState, we will call udpateMetaState(a typo...) to write something to meta.
I think this will lead to a dead lock? I do not think we need to put the state of meta table to meta table? It is always enabled...
But I do not know why it worked when I tried to restart the cluster... Maybe we do not enter this code path for a non-fresh cluster?