[jira] [Updated] (TEZ-169) Tez should not allow a 0-vertex dag or dags with vertices that have 0 tasks.

["Hitesh Shah (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TEZ-169?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hitesh Shah updated TEZ-169:
----------------------------

    Summary: Tez should not allow a 0-vertex dag or dags with vertices that have 0 tasks.  (was: wordcount fails when given an empty input directory)
    
> Tez should not allow a 0-vertex dag or dags with vertices that have 0 tasks.
> ----------------------------------------------------------------------------
>
>                 Key: TEZ-169
>                 URL: https://issues.apache.org/jira/browse/TEZ-169
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Hitesh Shah
>            Assignee: Hitesh Shah
>              Labels: TEZ-0.2.0, TEZ-1
>         Attachments: TEZ-169.1.patch
>
>
> 2013-05-30 10:53:53,496 FATAL [IPC Server handler 2 on 51640] org.apache.tez.dag.app.TaskAttemptListenerImpTezDag: Task: attempt_1369890958355_3_1_000001_000000_0 - exited : java.lang.ArithmeticException: / by zero
>         at org.apache.tez.engine.common.shuffle.impl.Shuffle.run(Shuffle.java:122)
>         at org.apache.tez.engine.lib.input.ShuffledMergedInput.initialize(ShuffledMergedInput.java:67)
>         at org.apache.tez.mapreduce.processor.reduce.ReduceProcessor.process(ReduceProcessor.java:120)
>         at org.apache.tez.engine.task.RuntimeTask.run(RuntimeTask.java:75)
>         at org.apache.tez.mapreduce.task.MRRuntimeTask.run(MRRuntimeTask.java:117)
>         at org.apache.hadoop.mapred.YarnTezDagChild.runTezTask(YarnTezDagChild.java:292)
>         at org.apache.hadoop.mapred.YarnTezDagChild.access$000(YarnTezDagChild.java:69)
>         at org.apache.hadoop.mapred.YarnTezDagChild$2.run(YarnTezDagChild.java:170)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:396)
>         at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1489)
>         at org.apache.hadoop.mapred.YarnTezDagChild.main(YarnTezDagChild.java:167)

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