Is possible to define an array like UDM in parallel udf?

supliu · March 10, 2013, 10:09

hello,
I have a doubt about arrays defined in parallel udf, plz help me.
Below is some of my opinion, but i don't know if that is right or not.

If I defined an array in a parallel udf without using compiling directives such as #if RP_NODE, the host and all the other compute nodes would have an independent copy of the array with the same name. If a node modified some elements of the array, the other nodes would not automatically see the modification.

Am i right?

vasava · March 20, 2013, 03:29

In my opinion unless you use RP_NODE or RP_HOST the changes in array would not be communicated between nodes and host.

March 10, 2013, 10:09	Arrays in parallel udf	#1
supliu New Member Join Date: Apr 2012 Posts: 4 Rep Power: 13	hello, I have a doubt about arrays defined in parallel udf, plz help me. Below is some of my opinion, but i don't know if that is right or not. If I defined an array in a parallel udf without using compiling directives such as #if RP_NODE, the host and all the other compute nodes would have an independent copy of the array with the same name. If a node modified some elements of the array, the other nodes would not automatically see the modification. Am i right? Last edited by supliu; March 14, 2013 at 07:32.

March 20, 2013, 03:29		#2
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 22	In my opinion unless you use RP_NODE or RP_HOST the changes in array would not be communicated between nodes and host. Last edited by vasava; March 22, 2013 at 03:05.

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