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  1. Hadoop Map/Reduce
  2. MAPREDUCE-3505

yarn APPLICATION_CLASSPATH needs to be overridable

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.23.0
    • Fix Version/s: 0.23.1
    • Component/s: mrv2
    • Labels:
    • Hadoop Flags:
      Reviewed

      Description

      Right now MRApps sets the classpath to just being mrapp-generated-classpath, its content and a hardcoded list of directories.
      If I understand correctly mrapp-generated-classpath is only there for testing and may change or disappear at any time

      The list of hardcoded directories is defined in hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/ApplicationConstants.java at line 92.
      For convenience, here is its current content:

        /**
         * Classpath for typical applications.
         */
        public static final String[] APPLICATION_CLASSPATH =
            new String[] {
              "$HADOOP_CONF_DIR",
              "$HADOOP_COMMON_HOME/share/hadoop/common/*",
              "$HADOOP_COMMON_HOME/share/hadoop/common/lib/*",
              "$HADOOP_HDFS_HOME/share/hadoop/hdfs/*",
              "$HADOOP_HDFS_HOME/share/hadoop/hdfs/lib/*",
              "$YARN_HOME/modules/*",
              "$YARN_HOME/lib/*"
            };
      

      Not all deployment scenarii fit in this layout and therefore we need a standardized way to customize this class path.

        Attachments

        1. MAPREDUCE-3505_rev2.patch
          11 kB
          Ahmed Radwan
        2. MAPREDUCE-3505.patch
          7 kB
          Ahmed Radwan

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              • Assignee:
                ahmed.radwan Ahmed Radwan
                Reporter:
                bmahe Bruno Mahé
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                • Created:
                  Updated:
                  Resolved: