Debanjan Bhattacharyya created HBASE-9112:
---------------------------------------------

             Summary: Custom TableInputFormat in initTableMapperJob throws 
ClassNoFoundException on TableMapper
                 Key: HBASE-9112
                 URL: https://issues.apache.org/jira/browse/HBASE-9112
             Project: HBase
          Issue Type: Bug
          Components: hadoop2
    Affects Versions: 0.2.0
         Environment: CDH-4.3.0-1.cdh4.3.0.p0.22
            Reporter: Debanjan Bhattacharyya


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)

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

Thanks
Regards

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