Error while executing select query in Hive - how to update Hadoop version

Question

I am currently using hadoop 1.0.3 version. I recently installed Apache Hive to run with it. I was running the select * query which gave me an NoSuchMethodError: org.apache.hadoop.mapred.JobConf.unset

I further found out its a compatibility issue with my current version of hadoop and requires me to upgrade to 1.2 or later.

I am fairly new to hadoop and would like to upgrade my current version to 1.2 or later. How do I go about doing the same.

I could not find any resources online to do so.

Thanks.

Answer 1

Just download hadoop 1.2.x from here and do necessary configuration changes in your new hadoop. Change HADOOP_HOME to point to your new hadoop folder.

NOTE: Change all the environmental variables (including .bashrc) to point to your new hadoop.