Hi, Young That is a choice. But I just want transform A or B when each vertex computing , now I need transform A and B. And in my program, the A and B are both somehow large. Is there another way to share global variable between each vertex beside getAggregatedValue() ? thanks a lot !
Luo At 2014-01-11 01:17:21,"Young Han" <[email protected]> wrote: Hi, One way, though not a very clean way, would be to create an object that encapsulates what you want to store in A and B. So, say you want A to be a DoubleWritable and B to be a Writable object with two integers. Then you could just create a Writable object having three fields: double, int, int. You'll have to implement a custom Writable class, but you won't need a special aggregator. Young On Fri, Jan 10, 2014 at 2:54 AM, Luo <[email protected]> wrote: hi all: org.apache.giraph.aggregators has these tow methods: void aggregate(A value) A getAggregatedValue() Now I want to use aggregate() in vertex_program to send value of type A for global aggregating, however, I want the output of custom aggregator is type B . that is to say , void aggregate(A value) B getAggregatedValue() Is there any idea for this? Thank a lot ! ======================== Luo
