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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-12081) Fix UserGroupInformation.java to support 64-bit zLinux
Date Tue, 30 Aug 2016 05:40:21 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-12081?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Wang updated HADOOP-12081:
---------------------------------
    Flags:   (was: Important)

> Fix UserGroupInformation.java to support 64-bit zLinux
> ------------------------------------------------------
>
>                 Key: HADOOP-12081
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12081
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 2.6.0
>         Environment: zLinux
>            Reporter: Adam Roberts
>            Assignee: Akira Ajisaka
>              Labels: zlinux
>             Fix For: 2.8.0, 3.0.0-alpha1
>
>         Attachments: HADOOP-12081.001.patch
>
>
> Currently the 64 bit check in security/UserGroupInformation.java uses os.arch and checks
for "64". s390x is returned on IBM's z platform: s390x is 64 bit. Without this change, if
we try to use HDFS with Spark, we get a fatal error (unable to login as we can't find a login
class).
> This address fixes said issue by identifying s390x as a 64 bit platform and thus allowing
Spark to run on zLinux. A simple fix with very big implications!



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