[HADOOP-8509] JarFinder duplicate entry: META-INF/MANIFEST.MF exception

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.23.1
• Fix Version/s: 2.0.2-alpha
• Component/s: util
• Hadoop Flags: Reviewed
• Assignee: Alejandro Abdelnur
• Reporter: Matteo Bertozzi
• Created: 13/Jun/12 17:45
• Updated: 11/Oct/12 17:45
• Resolved: 13/Jun/12 20:50

Description

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)

>> 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)