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Date: Fri, 2 Jan 2009 15:59:44 -0800 (PST)
From: "Joydeep Sen Sarma (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Subject: [jira] Commented: (HIVE-204) Provide option to run hadoop via
 TestMiniMR
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    [ https://issues.apache.org/jira/browse/HIVE-204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12660427#action_12660427 ] 

Joydeep Sen Sarma commented on HIVE-204:
----------------------------------------

ok. i am not sure why exactly - but we had trouble trying to do this (local mode same vm). if the localmode, same vm combination can be made to work - the minimr stuff is not relevant - is it?

also - for the minimr cluster - will it run in a separate jvm? or will it be running in the same jvm (as cli/driver etc.)?

> 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
>
> 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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