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https://issues.apache.org/jira/browse/HBASE-24372?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17107083#comment-17107083
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Duo Zhang commented on HBASE-24372:
-----------------------------------
As said in HBASE-20658, the latch is used to simulate the behaviors for old
client.
The actual problem here is that, what is the meaning of postCreateTable.
We should call it after the rpc call? Or should be called after the table has
been actually created.
> HBASE-20658 Release latch later for CreateTable procedure.
> ----------------------------------------------------------
>
> Key: HBASE-24372
> URL: https://issues.apache.org/jira/browse/HBASE-24372
> Project: HBase
> Issue Type: Bug
> Reporter: Lijin Bin
> Priority: Major
>
> {code}
> 2020-03-25 14:58:58,375 INFO
> [RpcServer.default.FPBQ.Fifo.handler=397,queue=77,port=60000] master.HMaster:
> Client=hbaseadmin//10.196.142.227 create 'extra_500000039', {NAME => 'extra',
> VERSIONS => '1', EVICT_BLOCKS_ON_CLOSE => 'false', NEW_VERSION_BEHAVIOR =>
> 'false', KEEP_DELETED_CELLS => 'false', CACHE_DATA_ON_WRITE => 'false',
> DATA_BLOCK_ENCODING => 'DIFF', TTL => '2592000 SECONDS (30 DAYS)',
> MIN_VERSIONS => '0', REPLICATION_SCOPE => '0', BLOOMFILTER => 'ROW',
> CACHE_INDEX_ON_WRITE => 'false', IN_MEMORY => 'false', CACHE_BLOOMS_ON_WRITE
> => 'false', PREFETCH_BLOCKS_ON_OPEN => 'false', COMPRESSION => 'SNAPPY',
> BLOCKCACHE => 'true', BLOCKSIZE => '65536'}
> 2020-03-25 14:58:58,482 INFO
> [RpcServer.default.FPBQ.Fifo.handler=397,queue=77,port=60000]
> rsgroup.RSGroupAdminServer: Moving table extra_500000039 to RSGroup default
> 2020-03-25 14:58:58,485 ERROR
> [RpcServer.default.FPBQ.Fifo.handler=397,queue=77,port=60000]
> master.TableStateManager: Unable to get table extra_500000039 state
> org.apache.hadoop.hbase.master.TableStateManager$TableStateNotFoundException:
> extra_500000039
> at
> org.apache.hadoop.hbase.master.TableStateManager.getTableState(TableStateManager.java:215)
> at
> org.apache.hadoop.hbase.master.TableStateManager.isTableState(TableStateManager.java:147)
> at
> org.apache.hadoop.hbase.master.assignment.AssignmentManager.isTableDisabled(AssignmentManager.java:388)
> at
> org.apache.hadoop.hbase.rsgroup.RSGroupAdminServer.moveTableRegionsToGroup(RSGroupAdminServer.java:233)
> at
> org.apache.hadoop.hbase.rsgroup.RSGroupAdminServer.moveTables(RSGroupAdminServer.java:347)
> at
> org.apache.hadoop.hbase.rsgroup.RSGroupAdminEndpoint.assignTableToGroup(RSGroupAdminEndpoint.java:456)
> at
> org.apache.hadoop.hbase.rsgroup.RSGroupAdminEndpoint.postCreateTable(RSGroupAdminEndpoint.java:479)
> at
> org.apache.hadoop.hbase.master.MasterCoprocessorHost$13.call(MasterCoprocessorHost.java:350)
> at
> org.apache.hadoop.hbase.master.MasterCoprocessorHost$13.call(MasterCoprocessorHost.java:347)
> at
> org.apache.hadoop.hbase.coprocessor.CoprocessorHost$ObserverOperationWithoutResult.callObserver(CoprocessorHost.java:551)
> at
> org.apache.hadoop.hbase.coprocessor.CoprocessorHost.execOperation(CoprocessorHost.java:625)
> at
> org.apache.hadoop.hbase.master.MasterCoprocessorHost.postCreateTable(MasterCoprocessorHost.java:347)
> at org.apache.hadoop.hbase.master.HMaster$4.run(HMaster.java:2048)
> at
> org.apache.hadoop.hbase.master.procedure.MasterProcedureUtil.submitProcedure(MasterProcedureUtil.java:134)
> at
> org.apache.hadoop.hbase.master.HMaster.createTable(HMaster.java:2031)
> at
> org.apache.hadoop.hbase.master.MasterRpcServices.createTable(MasterRpcServices.java:658)
> at
> org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:413)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:133)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:338)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:318)
> 2020-03-25 14:58:58,486 INFO
> [RpcServer.default.FPBQ.Fifo.handler=397,queue=77,port=60000]
> rsgroup.RSGroupAdminServer: Moving region(s) for table extra_500000039 to
> RSGroup default
> 2020-03-25 14:58:58,486 INFO
> [RpcServer.default.FPBQ.Fifo.handler=397,queue=77,port=60000]
> master.MasterRpcServices: Client=hbaseadmin//10.196.142.227 procedure request
> for creating table: namespace: "default"
> qualifier: "extra_500000039"
> procId is: 14019
> {code}
> Latch is released when execute prepareCreate, so
> MasterCoprocessorHost#postCreateTable can run before the table actually
> created, when RSGroup enable, it will throw exception like the above.
> Looks like the issue will not happen in master, but can happen in branch-2.
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