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https://issues.apache.org/jira/browse/HADOOP-12081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14581295#comment-14581295
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Gabor Liptak commented on HADOOP-12081:
---------------------------------------
https://github.com/apache/commons-lang/blob/master/src/main/java/org/apache/commons/lang3/SystemUtils.java
has some of this recognition functionality, but missing 64bit and zOS
functions.
I opened LANG-1145 and LANG-1146 to discuss.
> Support Hadoop on zLinux - fix JAAS authentication issue
> --------------------------------------------------------
>
> Key: HADOOP-12081
> URL: https://issues.apache.org/jira/browse/HADOOP-12081
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Affects Versions: 2.6.0
> Environment: zLinux.
> Reporter: Adam Roberts
> Labels: zlinux
>
> 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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