[jira] [Created] (HIVE-7204) Use NULL vertex location hint for Prewarm DAG vertices

[Gopal V (JIRA)]

Gopal V created HIVE-7204:
-----------------------------

             Summary: Use NULL vertex location hint for Prewarm DAG vertices
                 Key: HIVE-7204
                 URL: https://issues.apache.org/jira/browse/HIVE-7204
             Project: Hive
          Issue Type: Sub-task
          Components: Tez
    Affects Versions: 0.14.0
            Reporter: Gopal V
            Assignee: Gopal V
            Priority: Minor


The current 0.5.x branch of Tez added extra preconditions which check for 
parallelism settings to match between the number of containers and the vertex 
location hints.

{code}
Caused by: 
org.apache.hadoop.ipc.RemoteException(java.lang.IllegalArgumentException): 
Locations array length must match the parallelism set for the vertex
        at 
com.google.common.base.Preconditions.checkArgument(Preconditions.java:88)
        at org.apache.tez.dag.api.Vertex.setTaskLocationsHint(Vertex.java:105)
        at 
org.apache.tez.dag.app.DAGAppMaster.startPreWarmContainers(DAGAppMaster.java:1004)
{code}




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