[OOZIE-862] In Map-only Streaming (reducer=NONE), oozie runs reducer along with mapper(s).

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Invalid
• Assignee: Britt Cyr
• Reporter: Britt Cyr
• Created: 06/Jun/12 17:45
• Updated: 26/Jul/12 17:58
• Resolved: 26/Jul/12 17:58

Description

Oozie runs map-only streaming job with reducer, which is not intended.

It always creates reducer when I give any of the following in workflow.xml
--------------------------------------------
<streaming>
<mapper>mule_perm.pl</mapper>
<reducer>NONE</reducer>
</streaming>
--------------------------------------------
Or
--------------------------------------------
<streaming>
<mapper>mule_perm.pl</mapper>
</streaming>
--------------------------------------------

No reducer is created only when, I give following in workflow.xml as
configuration. (which is not intuitive/matching with hadoop jar streaming
command).
------------------------------------------
<configuration>
<property>
<name>mapred.reduce.tasks</name>
<value>0</value>
</property>
...
------------------------------------------