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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-5115) Webhcat e2e tests TestMapReduce_1 and TestHeartbeat_2 require changes for Hadoop 2
Date Sun, 18 Aug 2013 04:06:48 GMT

    [ https://issues.apache.org/jira/browse/HIVE-5115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13743124#comment-13743124
] 

Eugene Koifman commented on HIVE-5115:
--------------------------------------

I also think 3 is better long term as we add more/different tests in the future.
                
> Webhcat e2e tests TestMapReduce_1 and TestHeartbeat_2 require changes for Hadoop 2
> ----------------------------------------------------------------------------------
>
>                 Key: HIVE-5115
>                 URL: https://issues.apache.org/jira/browse/HIVE-5115
>             Project: Hive
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 0.12.0
>            Reporter: Deepesh Khandelwal
>            Assignee: Deepesh Khandelwal
>
> In the webhcat e2e testsuite we have two MR job submission tests
> TestMapReduce_1 (in jobsubmission.conf) runs the hadoop "wordcount" example. Intention
of this one is to test MR job submission using WebHCat.
> TestHeartbeat_2 (in jobsubmission2.conf) runs the hadoop "sleep" example. Intention of
this one is to test a long running (>10min) WebHCat MR job, see HIVE-4808.
> In Hadoop 1, both of these example MR applications are packaged in hadoop-examples.jar
> In Hadoop 2, "sleep" job is bundled in hadoop-mapreduce-client-jobclient.jar and "wordcount"
is bundled in hadoop-mapreduce-examples.jar
> Currently the webhcat tests assume that both these MR applications are in one jar that
we copy as hexamples.jar.
> To run these against Hadoop 2 I can think of three simple solutions:
> (1) Stick with one jar and run "sleep" application in the TestMapReduce_1 test as well.
> (2) Eliminate the test TestMapReduce_1 as TestHeartbeat_2 runs a MR job as well.
> (3) Require two different jars for Hadoop 2 and call them hclient.jar (containing "sleep"
application) and hexamples.jar (containing "wordcount" application). For Hadoop 1, we would
make two copies of the same hadoop-examples.jar application and call them hsleep.jar and examples.jar.
> The three approaches mentioned here would require least of changes. My inclination is
towards (2).
> Let me know what you think and I can provide the patch.

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