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From Bruno Mahé (Updated) (JIRA) <j...@apache.org>
Subject [jira] [Updated] (BIGTOP-25) Standardize JAVA_HOME detection
Date Sat, 22 Oct 2011 07:52:34 GMT

     [ https://issues.apache.org/jira/browse/BIGTOP-25?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bruno Mahé updated BIGTOP-25:
-----------------------------

    Attachment: 0001-BIGTOP-25.-Add-a-new-bigtop-utils-package-which-prov.patch

Here is a patch to add a new package named bigtop-utils and which will provide some java autodetection
code.
Some notes:
* I replaced along the way some Cloudera URLs by some BigTop ones
* I had to enhance the build system so we can build packages which don't have source tarball
* it put the script on /usr/libexec on RPM and /usr/lib/bigtop-utils on debs (debian does
not have /usr/libexec)

packages were built on fedora and maverick
                
> Standardize JAVA_HOME detection
> -------------------------------
>
>                 Key: BIGTOP-25
>                 URL: https://issues.apache.org/jira/browse/BIGTOP-25
>             Project: Bigtop
>          Issue Type: Bug
>          Components: General
>    Affects Versions: 0.1.0
>            Reporter: Roman Shaposhnik
>            Assignee: Bruno Mahé
>            Priority: Minor
>             Fix For: 0.2.0
>
>         Attachments: 0001-BIGTOP-25.-Add-a-new-bigtop-utils-package-which-prov.patch,
bigtop-javahome
>
>
> The Hadoop packages go through some effort (see /usr/lib/hadoop-0.20/bin/hadoop-config.sh)
to guess at a good JVM to use if JAVA_HOME isn't set. For example, if both OpenJDK and Oracle
JDK are installed, hadoop-config.sh will choose Oracle every time. Other packages that Bigtop
integrates, don't follow the same practice (ZK, Pig, etc.). It would be nice to have this
common code shared.

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