[jira] [Created] (TEZ-3420) Parallel queries to HS2/Tez not thread safe

["Uday Chitragar (JIRA)" <ji...@apache.org>]

Uday Chitragar created TEZ-3420:
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             Summary: Parallel queries to HS2/Tez not thread safe
                 Key: TEZ-3420
                 URL: https://issues.apache.org/jira/browse/TEZ-3420
             Project: Apache Tez
          Issue Type: Bug
    Affects Versions: 0.8.4
         Environment: HiveServer2 1.2.1 Local mode + Tez
            Reporter: Uday Chitragar


When running parallel queries (simultaneous connections by two beeline clients to HS2), I get the following exception (full debug attached), interestingly running the queries one after the other completes without any problem. The partition location and actual files seem to get mixed up across the DAGS
 
The setup is Hive (1.2.1) and Tez (0.8.4) running in local mode.
{noformat} 
2016-08-25 15:45:41,333 DEBUG [TezTaskEventRouter{attempt_1472136335089_0001_1_01_000000_0}]: impl.ShuffleInputEventHandlerImpl (ShuffleInputEventHandlerImpl.java:processDataMovementEvent(127)) - DME srcIdx: 0, targetIndex: 9, attemptNum
: 0, payload: [hasEmptyPartitions: true, host: , port: 0, pathComponent: , runDuration: 0]
2016-08-25 15:45:41,557 ERROR [TezChild]: tez.MapRecordSource (MapRecordSource.java:processRow(90)) - java.lang.IllegalStateException: Invalid input path file:/acorn/QC/OraExtract/20160131/Devices/Devices_extract_20160229T080613_3
        at org.apache.hadoop.hive.ql.exec.MapOperator.getNominalPath(MapOperator.java:415)
        at org.apache.hadoop.hive.ql.exec.MapOperator.cleanUpInputFileChangedOp(MapOperator.java:457)
        at org.apache.hadoop.hive.ql.exec.Operator.cleanUpInputFileChanged(Operator.java:1069)
        at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:501)
 
 
 
2016-08-25 15:45:41,817 INFO  [TezChild]: io.HiveContextAwareRecordReader (HiveContextAwareRecordReader.java:doNext(326)) –
Cannot get partition description from file:/acorn/QC/reportlib/VM_ValEdit.24656because cannot find dir = file:/ac
orn/QC/reportlib/VM_ValEdit.24656 in pathToPartitionInfo: [file:/acorn/QC/OraExtract/20160131/Devices]

{noformat}

Perhaps clashing directories for intermediate data might be causing an issue?




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