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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-8642) io.native.lib.available only controls zlib
Date Thu, 02 Aug 2012 17:15:03 GMT
Eli Collins created HADOOP-8642:

             Summary: io.native.lib.available only controls zlib
                 Key: HADOOP-8642
                 URL: https://issues.apache.org/jira/browse/HADOOP-8642
             Project: Hadoop Common
          Issue Type: Bug
          Components: native
    Affects Versions: 2.0.0-alpha
            Reporter: Eli Collins

Per core-default.xml {{io.native.lib.available}} indicates "Should native hadoop libraries,
if present, be used" however it looks like it only affects zlib. Since we always load the
native library this means we may use native libraries even if io.native.lib.available is set
to false.

Let's make the flag to work as advertised - rather than always load the native hadoop library
we only attempt to load the library (and report that native is available) if this flag is
set. Since io.native.lib.available defaults to true the default behavior should remain unchanged
(except that now we wont actually try to load the library if this flag is disabled).

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