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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-204) Provide option to run hadoop via TestMiniMR
Date Tue, 19 May 2009 17:10:45 GMT

    [ https://issues.apache.org/jira/browse/HIVE-204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12710799#action_12710799
] 

Namit Jain commented on HIVE-204:
---------------------------------

1. I agree with the mode approach instead of another target. But we still need minimr.query.files
to run the tests with the build - which tests get picked up by default.
    So, it is a just a cleaner way - let us talk about it offline
2. conf.set("hive.metastore.warehouse.dir", fsName.concat("/build/ql/test/data/warehouse/"));
    Note that a concatenation is being performed above. 
   new MiniMRCluster() sets the configuration variable fs.default.name.




> Provide option to run hadoop via TestMiniMR
> -------------------------------------------
>
>                 Key: HIVE-204
>                 URL: https://issues.apache.org/jira/browse/HIVE-204
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Testing Infrastructure
>            Reporter: Raghotham Murthy
>            Assignee: Namit Jain
>         Attachments: hive.204.1.patch, hive.204.2.patch, hive.204.3.patch, hive.204.4.patch,
hive.204.5.patch, hive.204.6.patch
>
>
> Right now MapRedTask does an exec on the hadoop command line. This prevents us from stepping
through query execution code. If there were an option to run hadoop via MiniMR, this will
create tasks within the same VM and so allows stepping into the execution code. See, src/test/org/apache/hadoop/mapred/TestMiniMRWithDFS.java
in the hadoop source code for an example.

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