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From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-8509) JarFinder duplicate entry: META-INF/MANIFEST.MF exception
Date Wed, 13 Jun 2012 17:47:42 GMT
Matteo Bertozzi created HADOOP-8509:
---------------------------------------

             Summary: JarFinder duplicate entry: META-INF/MANIFEST.MF exception
                 Key: HADOOP-8509
                 URL: https://issues.apache.org/jira/browse/HADOOP-8509
             Project: Hadoop Common
          Issue Type: Bug
          Components: util
    Affects Versions: 0.23.1
            Reporter: Matteo Bertozzi
            Priority: Minor


Calling JarFinder.getJar() throws an exception if user has a "META-INF/MANIFEST.MF" in the
same directory of the .class specified.

Jarfinder.getJar() call createJar() that always create a new Manifest and then add all the
files contained in the .class directory.

To reproduce the problem in a simple way you can create a SimpleClass.java in the same directory
create a META-INF/MANIFEST.MF and then call JarFinder.getJar(SimpleClass.class)

{code}
>> Caused by: java.util.zip.ZipException: duplicate entry: META-INF/MANIFEST.MF
>> at java.util.zip.ZipOutputStream.putNextEntry(ZipOutputStream.java:175)
>> at java.util.jar.JarOutputStream.putNextEntry(JarOutputStream.java:92)
>> at org.apache.hadoop.util.JarFinder.zipDir(JarFinder.java:66)
>> at org.apache.hadoop.util.JarFinder.zipDir(JarFinder.java:62)
>> at org.apache.hadoop.util.JarFinder.zipDir(JarFinder.java:44)
>> at org.apache.hadoop.util.JarFinder.createJar(JarFinder.java:93)
>> at org.apache.hadoop.util.JarFinder.getJar(JarFinder.java:134)
{code}

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