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  1. HBase
  2. HBASE-9112

Custom TableInputFormat in initTableMapperJob throws ClassNoFoundException on TableMapper

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.94.6.1
    • Fix Version/s: None
    • Component/s: hadoop2, mapreduce
    • Labels:
      None
    • Environment:

      CDH-4.3.0-1.cdh4.3.0.p0.22

      Description

      When using custom TableInputFormat in TableMapReduceUtil.initTableMapperJob in the following way
      TableMapReduceUtil.initTableMapperJob("mytable",
      MyScan,
      MyMapper.class,
      MyKey.class,
      MyValue.class,
      myJob,true, MyTableInputFormat.class);

      I get error: java.lang.ClassNotFoundException: org.apache.hadoop.hbase.mapreduce.TableMapper
      at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
      at java.lang.ClassLoader.defineClass1(Native Method)
      at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
      at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
      at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
      at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
      at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

      If I do not use the last two parameters, there is no error.
      What is going wrong here?

      Thanks
      Regards

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              • Assignee:
                ndimiduk Nick Dimiduk
                Reporter:
                run2 Debanjan Bhattacharyya
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                • Created:
                  Updated:
                  Resolved: