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From "Zhijie Shen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-9658) SnappyCodec#checkNativeCodeLoaded may unexpectedly fail when native code is not loaded
Date Fri, 21 Jun 2013 21:26:20 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-9658?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zhijie Shen updated HADOOP-9658:
--------------------------------

    Status: Patch Available  (was: Open)
    
> SnappyCodec#checkNativeCodeLoaded may unexpectedly fail when native code is not loaded
> --------------------------------------------------------------------------------------
>
>                 Key: HADOOP-9658
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9658
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Zhijie Shen
>            Assignee: Zhijie Shen
>         Attachments: HADOOP-9658.1.patch
>
>
> {code}
>   public static void checkNativeCodeLoaded() {
>       if (!NativeCodeLoader.buildSupportsSnappy()) {
>         throw new RuntimeException("native snappy library not available: " +
>             "this version of libhadoop was built without " +
>             "snappy support.");
>       }
>       if (!SnappyCompressor.isNativeCodeLoaded()) {
>         throw new RuntimeException("native snappy library not available: " +
>             "SnappyCompressor has not been loaded.");
>       }
>       if (!SnappyDecompressor.isNativeCodeLoaded()) {
>         throw new RuntimeException("native snappy library not available: " +
>             "SnappyDecompressor has not been loaded.");
>       }
>   }
> {code}
> buildSupportsSnappy is native method. If the native code is not loaded, the method will
be missing. Therefore, whether the native code is loaded or not, the first runtime exception
will not be thrown.

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