Hadoop Common
  1. Hadoop Common
  2. HADOOP-7368

Mechanism for providing version info of hadoop jars


    • Type: Improvement Improvement
    • Status: Open
    • Priority: Major Major
    • Resolution: Unresolved
    • Affects Version/s: 0.23.0
    • Fix Version/s: None
    • Component/s: build
    • Labels:
    • Tags:
      jar version providers


      In 0.20.x, only one jar (hadoop-core-*.jar) really matters. The o.a.h.util.VersionInfo combined with saveVersion.sh script (generating a package level annotation) served us well. For 0.23+, due to the project split and modularization of mapreduce (currently in MR-279), a lot more essential hadoop jars are created. The potential of mixing up the jars is significantly increased as well. We need a simple way to list the version info (version, branch, source checksum etc.) for all the jars involved. This is essential for QE and tracking down various issues.

      I propose that we use a VersionProvider interface (similar to the current VersionInfo util class) and ServiceLoader to enumerate the version providers in the jars.

      public interface VersionProvider {
        String getJar(); 
        String getPackage();
        String getVersion();
        String getRevision();
        String getBranch();
        String getDate();
        String getUrl();
        String getSourceChecksum();


        Luke Lu created issue -
        Arun C Murthy made changes -
        Field Original Value New Value
        Fix Version/s 0.24.0 [ 12317652 ]
        Fix Version/s 0.23.0 [ 12315569 ]
        Harsh J made changes -
        Fix Version/s 0.24.0 [ 12317652 ]


          • Assignee:
            Luke Lu
            Luke Lu
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            • Created: