Hi, This question is for mapreduce-user not hbase-user.
+mapreduce-user bcc hbase-user On Wed, Feb 29, 2012 at 7:40 PM, T Vinod Gupta <tvi...@readypulse.com> wrote: > hi, > whats the recommended way of passing arguments to m/r jobs? based on web > examples, the mapper and reducer classes are static classes. so if you have > to set some parameters that the individual instances of m/r runs need to > access, whats the way? im trying to do it by creating a static initialize > method in mapper and reducer and configuring static variables there. i am > not sure if this is the best way. Look at the configure method: http://hadoop.apache.org/common/docs/current/api/org/apache/hadoop/mapred/Mapper.html You are passed the job conf. You can set your parameters on the job conf. > this brings me to next question - i need to create a always running daemon > that schedules multiple m/r jobs everyday. it can just queue multiple jobs > and wait for their completion. but then the above question becomes even > more relevant. if static variables are used, then how can one queue > multiple jobs on the same mapper/reducer? I think you want to look at oozie: http://incubator.apache.org/oozie/ Brock -- Apache MRUnit - Unit testing MapReduce - http://incubator.apache.org/mrunit/
