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POClassNotFoundException on TableMapper when I use my own TableInputFormat
 

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    <p>I am trying to use my own TableInputFormat for a MapReduceJob in the following way</p> <p><code> TableMapReduceUtil.initTableMapperJob("mytable", MyScan, MyMapper.class, MyKey.class, MyValue.class, myJob,true, MyTableInputFormat.class);</code></p> <p>When I run the job, I get a ClassNotFoundException: org.apache.hadoop.hbase.mapreduce.TableMapper - any idea why ? </p> <p>if I do not use the last two parameters of initTableMapperJob, then there is no ClassNotFoundException (but obviously that defeats the purpose)</p> <p>I am struggling on this for few days now. This is somewhere someone did the same thing <a href="https://stackoverflow.com/questions/11353911/extending-hadoops-tableinputformat-to-scan-with-a-prefix-used-for-distribution/17952223">Extending Hadoop&#39;s TableInputFormat to scan with a prefix used for distribution of timestamp keys</a>, but I am not being able to ask the question on that thread.</p> <p>I am working on a Cloudera Cluster 4.3.0 with Hadoop 2</p> <p>Adding the stacktrace error: </p> <pre><code>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) .... </code></pre> <p>Thanks a lot for helping</p> <p>Regards</p>
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    1. COAdding the stacktrace `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) .... `
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