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Robert Joseph Evans edited comment on MAPREDUCE-4888 at 12/20/12 5:21 PM: -------------------------------------------------------------------------- I am +1 too. My only comment is you may want to delete out my debugging System.out.println calls in the test. was (Author: revans2): I am +1 of it too. My only comment is you may want to delete out my debugging System.out.println calls in the test. > NLineInputFormat drops data in 1.1 and beyond > --------------------------------------------- > > Key: MAPREDUCE-4888 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-4888 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: mrv1 > Affects Versions: 1.1.0 > Reporter: Robert Joseph Evans > Assignee: Vinod Kumar Vavilapalli > Priority: Blocker > Attachments: MAPREDUCE-4888-20121219.txt, test.patch > > > When trying to root cause why MAPREDUCE-4782 did not cause us issues on > 1.0.2, I found out that HADOOP-7823 introduced essentially the exact same > error into org.apache.hadoop.mapred.lib.NLineInputFormat. > In 1.X org.apache.hadoop.mapred.lib.NLineInputFormat and > org.apache.hadoop.mapreduce.lib.input.NLineInputFormat are separate > implementations. The latter had an off by one error in it until > MAPREDUCE-4782 fixed it. The former had no error in it until HADOOP-7823 > introduced it in 1.1 and MAPREDUCE-375 combined the implementations together > but picked the implementation with the off by one error in 0.21. > I will attach a patch that exposes the error. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira