Is there a way to change number of mappers in Hadoop streaming command line? I know I can change hadoop-default.xml:
<property>
<name>mapred.map.tasks</name>
<value>10</value>
<description>The default number of map tasks per job. Typically set
to a prime several times greater than number of available hosts.
Ignored when mapred.job.tracker is "local".
</description>
</property>
But that's for all jobs. What if I just want each job has different
NUM_OF_Mappers themselves? Thanks
