[ http://issues.apache.org/jira/browse/HADOOP-809?page=comments#action_12457010 ] arkady borkovsky commented on HADOOP-809: -----------------------------------------
Also, it should require less characters to specify. E.g it may be a deafault mapper -- in this case the streaming job client should say "Using the default identity mapper" > Streaming should have a built in identity mapper > ------------------------------------------------ > > Key: HADOOP-809 > URL: http://issues.apache.org/jira/browse/HADOOP-809 > Project: Hadoop > Issue Type: Improvement > Components: contrib/streaming > Reporter: arkady borkovsky > > Currently, in order to merge 2 inputs , or to feed the output of > type-changing reduce to another reduce, one needs to use > -mapper /bin/cat > Streaming already has identity reducer implemented. > Adding identity mapper will make it more conceptually clean, more efficient, > and hopefully more reliable. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
