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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9517) Define Hadoop Compatibility
Date Fri, 17 May 2013 16:07:16 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13660819#comment-13660819

Steve Loughran commented on HADOOP-9517:

Another one: OS/JVM compatibility. What guarantees/promises are made for OS & JVM.

# I could see OS family statements: Linux, Windows, vendor-backed versions such as IBM Power,
but not specific versions, especially as the OS vendor trails off security patches. Testing
and bug reports welcome.

# JVM? What could be said here? That the min JVM is specified by the code, no intent to force
updates on a point release unless/until that JVM version becomes unsupported. Major releases
(or different OS platform/Hardware releases may mandate later versions (e.g windows and Arm
prefer open-jdk7). Testing and bug reports welcome.

# Hardware? "No plans to make Hadoop specific to any CPU family, even though there may be
some CPU family-specific optimisations at the native code level." or "this is driven by (JVM,
OS) support; testing always welcome). 
> Define Hadoop Compatibility
> ---------------------------
>                 Key: HADOOP-9517
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9517
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: documentation
>            Reporter: Arun C Murthy
>            Assignee: Karthik Kambatla
>         Attachments: hadoop-9517.patch, hadoop-9517.patch, hadoop-9517.patch, hadoop-9517.patch
> As we get ready to call hadoop-2 stable we need to better define 'Hadoop Compatibility'.
> http://wiki.apache.org/hadoop/Compatibility is a start, let's document requirements clearly
and completely.

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