Too Many Aggregators
Posted: Tue Feb 08, 2011 12:45 am
Hi Viewers, :D
Please give me a thought on this requirement
I have one input dataset, from that I have to create one sequential file report which will contains 30 aggregate count columns, There are 4 key columns and 30 additional columns in source file, I have to calculate non missing values on every column based on group of this 4 key columns. Non missing in the sense which are not null. So for 30 columns I am using 30 aggregators, Is there any way to achieve this with out using this many aggregators
Please give me a thought on this requirement
I have one input dataset, from that I have to create one sequential file report which will contains 30 aggregate count columns, There are 4 key columns and 30 additional columns in source file, I have to calculate non missing values on every column based on group of this 4 key columns. Non missing in the sense which are not null. So for 30 columns I am using 30 aggregators, Is there any way to achieve this with out using this many aggregators