[jira] [Created] (BIGTOP-2519) JAVA_HOME not detected correctly for openjdk 8

["Pete Vander Giessen (JIRA)" <ji...@apache.org>]

Pete Vander Giessen created BIGTOP-2519:
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             Summary: JAVA_HOME not detected correctly for openjdk 8
                 Key: BIGTOP-2519
                 URL: https://issues.apache.org/jira/browse/BIGTOP-2519
             Project: Bigtop
          Issue Type: Bug
          Components: hadoop
    Affects Versions: 1.1.0
            Reporter: Pete Vander Giessen
            Assignee: Pete Vander Giessen
            Priority: Minor
             Fix For: 1.2.0


I'm running into an issue where the hadoop namenode fails to start hdfs when using openjdk 8. It appears to be because the namenode scripts rely on the bigtop-detect-javahome script in bigtop_utils, which doesn't detect JAVA_HOME correctly for openjdk 8.

I'd like to modify the script so that it first tries to figure out java home by looking in /etc/alternatives and deriving JAVA_HOME from the symlink to the java executable. This should work on both Redhat and Debian based distros, in a forwards compatible way. The script would fall back to the more manual process for distros that don't use /etc/alternatives.

Will submit a patch soon ....



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