Map reduce job getting stuck at map 0% reduce 0%

Question

I am running the famous wordcount example. I have a local and prod hadoop setup. The same example is working in prod, but its not working locally. Can someone tell me what should I look for. The job is getting stuck. The task logs are:

~/tmp$ hadoop jar wordcount.jar WordCount /testhistory /outputtest/test
Warning: $HADOOP_HOME is deprecated.

13/08/29 16:12:34 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same.
13/08/29 16:12:35 INFO input.FileInputFormat: Total input paths to process : 3
13/08/29 16:12:35 INFO util.NativeCodeLoader: Loaded the native-hadoop library
13/08/29 16:12:35 WARN snappy.LoadSnappy: Snappy native library not loaded
13/08/29 16:12:35 INFO mapred.JobClient: Running job: job_201308291153_0015
13/08/29 16:12:36 INFO mapred.JobClient:  map 0% reduce 0%

Locally hadoop in running as pseudo distributed mode. All the 3 processes, namenode, datanode, jobtracker is running. Let me know if some extra information is required.

Answer 1

The tasktracker seems to be missing.

Try:

hadoop tasktracker &

Answer 2

In Hadoop 2.x this problem could be related to memory issues, you can see it in MapReduce in Hadoop 2.2.0 not working