This week's book giveaways are in the Refactoring and Agile forums. We're giving away four copies each of Re-engineering Legacy Software and Docker in Action and have the authors on-line! See this thread and this one for details.
I am using Hadoop version 0.20.2003. I wanted to create my own InputFormat and Reader. I wanted to do it with the use of new org.apache.hadoop.mapreduce.* classes. Unfortunately I have encountered some problems.
Inside the visible line I have 3 strange problems:
1. cannot find symbol : variable COUNTER_GROUP
2 cannot find symbol : variable BYTES_READ
3. cannot find symbol : method getCounter(java.lang.String,java.lang.String)
I've checked the sources and all 3 "symbols" are there. Does anyone know what is the problem? Also I have came across interesting thing. Mainly according to hadoop javadoc org.apache.hadoop.mapreduce.TaskAttemptContext is:
While the src file defines it as:
For the record my "amazing" PatentLineRecordReder class is just a copy/paste from the org.apache.hadoop.mapreduce.lib.input.LineRecordReader, with minor changes in the initialize() method.
Does anyone came across similar problems, or rather should I ask "What am I doing wrong?".