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From "Joydeep Sen Sarma (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4090) The configuration file lists two paths to hadoop directories (bin and conf). Startup should check that these are valid directories and give appropriate messages.
Date Mon, 08 Sep 2008 05:54:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12629075#action_12629075
] 

Joydeep Sen Sarma commented on HADOOP-4090:
-------------------------------------------

hmmm - i don't quite agree with the thesis here.

here's the background: lot of regular hadoop users have a 'hadoop' in their path. they have
already setup their environment for hadoop. hive is a utility on top of hadoop. as such using
the 'hadoop' found in the user's path is meant to help the user. otherwise they have to setup
another env variable. that's a negative for user experience. so how's this a bug?

secondly - HADOOP_HOME is not user defined today. From hadoop-config.sh:

# the root of the Hadoop installation                                                    
                                       
export HADOOP_HOME=`dirname "$this"`/..

so user's are not setting this today (just in case there is a misconception)

I would agree with renaming 'HADOOP' in hive shell scripts with 'HADOOP_HOME' - that would
certainly seem more consistent. would not agree with giving it precedence over path setting
since no one sets this env variable today and everyone sets hadoop into their path.

> The configuration file lists two paths to hadoop directories (bin and conf).  Startup
should check that these are valid directories and give appropriate messages.
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-4090
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4090
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: contrib/hive
>    Affects Versions: 0.19.0
>            Reporter: Ashish Thusoo
>            Priority: Minor
>         Attachments: hadoop-4090.patch
>
>
> The configuration file lists two paths to hadoop directories (bin and conf).  Startup
should check that these are valid directories and give appropriate messages.
> Reported by Chad.

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