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Yang Hao commented on MAPREDUCE-6220: ------------------------------------- I think we can change the word from forbid to suppress as you said, for that to suppress the stdout is the goal and devnull is a method to ahieve this goal. Users may be concerned on the function than the implement method > Provide option to suppress stdout of MapReduce task > --------------------------------------------------- > > Key: MAPREDUCE-6220 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-6220 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Components: mrv2 > Reporter: Yang Hao > Assignee: Yang Hao > Attachments: MAPREDUCE-6220.patch, MAPREDUCE-6220.v2.patch > > > System.out is a ugly way to print log, and many times it would do harm to > Hadoop cluster. So we can provide an option to forbid it -- This message was sent by Atlassian JIRA (v6.3.4#6332)