Connection Error in Apache Pig

Question

I am running Apache Pig .11.1 with Hadoop 2.0.5.

Most simple jobs that I run in Pig work perfectly fine.

However, whenever I try to use GROUP BY on a large d

Answer 1

I am using Hadoop 2.2.0. This problem was due to The History server was not running. I had to start the history server. I used following command to start history server:

[root@localhost ~]$ /usr/lib/hadoop-2.2.0/sbin/mr-jobhistory-daemon.sh start historyserver