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https://issues.apache.org/jira/browse/HADOOP-8509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13294599#comment-13294599
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Alejandro Abdelnur commented on HADOOP-8509:
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Matteo, thanks for creating the JIRA uploading the patch.
> 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
> Assignee: Alejandro Abdelnur
> Priority: Minor
> Attachments: HADOOP-8509.patch
>
>
> 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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