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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3465) Hbase should use a HADOOP_HOME environment variable if available.
Date Wed, 13 Jul 2011 17:50:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13064725#comment-13064725
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stack commented on HBASE-3465:
------------------------------

Alejandro:

So, whats in the hbase tar ball?  Do we include an hadoop jar?  We need to, don't we, so that
we can run standalone mode.

If HADOOP_HOME is defined and if hbase/lib dir has hadoop*jars, we'll need to do some pruning
of the CLASSPATH.  Currently we include hbase/lib/*... We'd have to do a little messing to
exclude hadoop-*.jars. That'd be easy enough.

What you reckon @Ted?

I can help out Alejandro.  I volunteer to do the doc portion of this issue.

> Hbase should use a HADOOP_HOME environment variable if available.
> -----------------------------------------------------------------
>
>                 Key: HBASE-3465
>                 URL: https://issues.apache.org/jira/browse/HBASE-3465
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.90.0
>            Reporter: Ted Dunning
>
> I have been burned a few times lately while developing code by having the make sure that
the hadoop jar in hbase/lib is exactly correct.  In my own deployment, there are actually
3 jars and a native library to keep in sync that hbase shouldn't have to know about explicitly.
 A similar problem arises when using stock hbase with CDH3 because of the security patches
changing the wire protocol.
> All of these problems could be avoided by not assuming that the hadoop library is in
the local directory.  Moreover, I think it might be possible to assemble the distribution
such that the compile time hadoop dependency is in a cognate directory to lib and is referenced
using a default value for HADOOP_HOME.
> Does anybody have any violent antipathies to such a change?

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