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https://issues.apache.org/jira/browse/HADOOP-4090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12629075#action_12629075
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jsensarma edited comment on HADOOP-4090 at 9/7/08 10:59 PM:
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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.
secondly - HADOOP_HOME is not user defined today. From hadoop-config.sh:
# the root of the Hadoop installation
export HADOOP_HOME=`dirname "$this"`/..
so user's are not setting this today (just in case there is a misconception)
I would agree with renaming 'HADOOP' in hive shell scripts with 'HADOOP_HOME' -
that would certainly seem more consistent. i feel that we should default to
hadoop found in path - since that is the common case. we should not force users
to set more things than are necessary to make hadoop run. would also agree to
have HADOOP_HOME override hadoop in path (for advanced users).
was (Author: jsensarma):
hmmm - i don't quite agree with the thesis here.
here's the background: lot of regular hadoop users have a 'hadoop' in their
path. they have already setup their environment for hadoop. hive is a utility
on top of hadoop. as such using the 'hadoop' found in the user's path is meant
to help the user. otherwise they have to setup another env variable. that's a
negative for user experience. so how's this a bug?
secondly - HADOOP_HOME is not user defined today. From hadoop-config.sh:
# the root of the Hadoop installation
export HADOOP_HOME=`dirname "$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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