Can you share the exception stack trace and piece of code where you are trying to create?
Thanks Devaraj ________________________________________ From: Ondřej Klimpera [klimp...@fit.cvut.cz] Sent: Tuesday, June 19, 2012 6:03 PM To: common-user@hadoop.apache.org Subject: Creating MapFile.Reader instance in reducer setup Hello, I'm tring to use MapFile (stored on HDFS) in my reduce task, which processes some text data. When I try to initialize MapFile.Reader in reducer configure() method, app throws NullPointerException, when the same approach is used for each reduce() method call with the same parameters, everything goes all right. But creating instance of Reader for each reduce() call creates big slow down. Do you have any idea what am I doing wrong. Thanks Ondrej Klimpera
