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Thursday, March 21, 2013

MapReduce jobs running through Eclipse don't appear in the JobTracker Web UI at 50030

Hello all,

      In response to an earlier post of mine, that shows how to run a MapReduce job through Eclipse IDE, I quite frequently receive comments that the users are not able to see the status of their MapReduce job, which they are currently running, on the JobTracker Web UI.

The trick is very simple. Just add the following 2 lines in your code where you are doing all the configuration. Something like this :


Configuration conf = new Configuration();
conf.set("fs.default.name", "hdfs://localhost:9000");
conf.set("mapred.job.tracker", "localhost:9001");

This should do the trick for you. After doing this just point your web browser to the JobTracker Web UI at localhost:50030.

**Modify the hostname and port address as per your configuration.

To know about Hadoop configuration and setup you can go to this link. It shows the entire process in detail.

HTH