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Date: Mon, 20 Jun 2011 18:16:47 +0000 (UTC)
From: "Todd Lipcon (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HADOOP-7405) libhadoop is all or nothing
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    [ https://issues.apache.org/jira/browse/HADOOP-7405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13052122#comment-13052122 ] 

Todd Lipcon commented on HADOOP-7405:
-------------------------------------

Allen, if you want to write a patch that adds a call like:
boolean isNativeFeatureSupported(long featureCode);
...with a set of enums for various features, I would happily review it.


> libhadoop is all or nothing
> ---------------------------
>
>                 Key: HADOOP-7405
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7405
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: native
>    Affects Versions: 0.20.203.0, 0.23.0
>         Environment: Everything not Linux
>            Reporter: Allen Wittenauer
>            Priority: Blocker
>              Labels: regression
>
> As a result of a ton of new code in libhadoop being added in 0.20.203/0.22, a lot of features that used to work no longer do reliably.  The most common problem is native compression, but other issues such as Mac OS X's group support broke as well.  The native code checks need to be refactored such that libhadoop.so should report what it supports rather than having the Java-side assume that if it loads, it is all supported.  This would allow us to stub routines until they've been vetted, removing the chances of such regressions appearing in the future.

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