Question

I just imported the hadoop projects to eclipse according to the information given in http://wiki.apache.org/hadoop/EclipseEnvironment and eclipse show some error in hadoop-common project and all the errors are in the same file which is /hadoop-common/target/generated-sources/java/org/apache/hadoop/package-info.java

Here is the one the eclipse error message:

The attribute branch is undefined for the annotation type HadoopVersionAnnotation

All the other errors are actually same. For example, another error says “The attribute date” instead of “The attribute branch”.

Lastly i want to give the source code of the package-info.java file:

/*
 * Generated by src/saveVersion.sh
 */
@HadoopVersionAnnotation(version="3.0.0-SNAPSHOT", revision="930c89b105e19f1f4db755c0071378c507386824", branch="trunk",
                         user="byildiz", date="Mon Jul 16 18:56:16 EEST 2012", url="git://kaptan/home/byildiz/Desktop/hadoop-common/hadoop-common-project/hadoop-common",
                         srcChecksum="e54b3f6cb07ea1cd833d1ab0b947ac39")
package org.apache.hadoop;

How can i fix this error?

Answer 1

I think this must be an Eclipse bug. I changed one letter in HadoopVersionAnnotation.java (specifically, version -> versionx (save) -> version (save)) to trigger a recompile, and all of the compile errors went away.