Hi all,
I am new to Hadoop and just start coding in MapReduce. I've checked out the
trunk and am able to build the MapReduce project. I also import the code to
the eclipse. My very first goal is to add a few printout statements,
locally build the MR jar, deploy it to a testbed, and run a test prog
Hi Viney,
Instead of adding sysout's and building every time, I will suggest you to
set up dev env for debugging.
As you are already built the mapreduce project, you can add debug conf's
in yarn-en.sh and put debug points in the code and start analyzing it.
1) Copy yarn-env.sh(
hadoop-dist/tar
I am using hadoop 0.20.2 mapreduce API. The program is running fine, just
slower than it could.
I sum values and then use
job.setSortComparatorClass(LongWritable.DecreasingComparator.class) to sort
descending by sum. I need to stop the reducer after outputting the first N
records. This would save
