[jira] [Created] (HIVE-18227) Tez parallel execution fail

["Daniel Dai (JIRA)" <ji...@apache.org>]

Daniel Dai created HIVE-18227:
---------------------------------

             Summary: Tez parallel execution fail
                 Key: HIVE-18227
                 URL: https://issues.apache.org/jira/browse/HIVE-18227
             Project: Hive
          Issue Type: Bug
          Components: Tez
            Reporter: Daniel Dai
            Assignee: Daniel Dai


Running tez Dag in parallel within a session fail. Here is the test case:
{code}
set hive.exec.parallel=true;
set hive.merge.tezfiles=true;
set tez.grouping.max-size=100000;
set tez.grouping.min-size=10000;

from student
insert overwrite table student4 select *
insert overwrite table student5 select *
insert overwrite table student6 select *;
{code}

The merge task run in parallel and result the exception:
{code}
org.apache.tez.dag.api.TezException: App master already running a DAG
        at org.apache.tez.dag.app.DAGAppMaster.submitDAGToAppMaster(DAGAppMaster.java:1255)
        at org.apache.tez.dag.api.client.DAGClientHandler.submitDAG(DAGClientHandler.java:118)
        at org.apache.tez.dag.api.client.rpc.DAGClientAMProtocolBlockingPBServerImpl.submitDAG(DAGClientAMProtocolBlockingPBServerImpl.java:161)
        at org.apache.tez.dag.api.client.rpc.DAGClientAMProtocolRPC$DAGClientAMProtocol$2.callBlockingMethod(DAGClientAMProtocolRPC.java:7471)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2273)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2269)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2267)
{code}



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