changxue created IOTDB-5059:
-------------------------------

             Summary: [schema] create timeseries occasionally return 906: There 
are no available SchemaRegionGroup RegionGroups currently
                 Key: IOTDB-5059
                 URL: https://issues.apache.org/jira/browse/IOTDB-5059
             Project: Apache IoTDB
          Issue Type: Bug
          Components: Core/Schema Manager
    Affects Versions: 0.14.0-SNAPSHOT
            Reporter: changxue
            Assignee: Jinrui Zhang
         Attachments: allnodes-log.tar.gz

[schema] create timeseries occasionally return 906: There are no available 
SchemaRegionGroup RegionGroups currently

3C3D cluster, Nov.27th source codes

The cluster just started up successfully and I'm sure all nodes are all right.

{code:sql}
IoTDB>create timeseries root.udf.exp1.s1 with datatype=int32
SQLSTATE : 906: There are no available SchemaRegionGroup RegionGroups 
currently, please use "show cluster" or "show regions" to check the cluster 
status
{code}

datanode log:
{code:java}
2022-11-27 09:54:31,464 [1@group-000200000000-StateMachineUpdater] INFO  
o.a.i.d.m.s.SchemaRegionMemoryImpl:444 - Start create snapshot of schemaRegion 
SchemaRegion[0]
2022-11-27 09:54:31,464 [pool-26-IoTDB-ClientRPC-Processor-3] ERROR 
o.a.i.d.u.ErrorHandlingUtils:90 - Status code: 906, Query Statement: "create 
timeseries root.udf.upload.d1.s1 with datatype=int32". executeStatement failed
java.lang.RuntimeException: org.apache.iotdb.commons.exception.IoTDBException: 
There are no available SchemaRegionGroup RegionGroups currently, please use 
"show cluster" or "show regions" to check the cluster status
        at 
org.apache.iotdb.db.mpp.plan.analyze.ClusterPartitionFetcher.getOrCreateSchemaPartition(ClusterPartitionFetcher.java:146)
        at 
org.apache.iotdb.db.mpp.plan.analyze.AnalyzeVisitor.visitCreateTimeseries(AnalyzeVisitor.java:1363)
        at 
org.apache.iotdb.db.mpp.plan.analyze.AnalyzeVisitor.visitCreateTimeseries(AnalyzeVisitor.java:160)
        at 
org.apache.iotdb.db.mpp.plan.statement.metadata.CreateTimeSeriesStatement.accept(CreateTimeSeriesStatement.java:130)
        at 
org.apache.iotdb.db.mpp.plan.statement.StatementVisitor.process(StatementVisitor.java:107)
        at 
org.apache.iotdb.db.mpp.plan.analyze.Analyzer.analyze(Analyzer.java:43)
        at 
org.apache.iotdb.db.mpp.plan.execution.QueryExecution.analyze(QueryExecution.java:258)
        at 
org.apache.iotdb.db.mpp.plan.execution.QueryExecution.<init>(QueryExecution.java:142)
        at 
org.apache.iotdb.db.mpp.plan.Coordinator.createQueryExecution(Coordinator.java:104)
        at 
org.apache.iotdb.db.mpp.plan.Coordinator.execute(Coordinator.java:137)
        at 
org.apache.iotdb.db.service.thrift.impl.ClientRPCServiceImpl.executeStatementInternal(ClientRPCServiceImpl.java:215)
        at 
org.apache.iotdb.db.service.thrift.impl.ClientRPCServiceImpl.executeStatementV2(ClientRPCServiceImpl.java:390)
        at 
org.apache.iotdb.service.rpc.thrift.IClientRPCService$Processor$executeStatementV2.getResult(IClientRPCService.java:3453)
        at 
org.apache.iotdb.service.rpc.thrift.IClientRPCService$Processor$executeStatementV2.getResult(IClientRPCService.java:3433)
        at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:38)
        at 
org.apache.iotdb.db.service.thrift.ProcessorWithMetrics.process(ProcessorWithMetrics.java:64)
        at 
org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:248)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.iotdb.commons.exception.IoTDBException: There are no 
available SchemaRegionGroup RegionGroups currently, please use "show cluster" 
or "show regions" to check the cluster status
        ... 20 common frames omitted
2022-11-27 09:54:31,466 [1@group-000200000000-StateMachineUpdater] INFO  
o.a.i.d.m.s.SchemaRegionMemoryImpl:450 - MTree snapshot creation of 
schemaRegion SchemaRegion[0] costs 2ms.
{code}



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