apache spark - Jboss drools: Memory leak when using accumulate collectList function -

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i using jboss drools execute rules on spark big data platform. using accumulate function in "when" (lhs) collect objects matching condition. works cases list size small. however, 1 of cases, have 25000 matches condition. collectlist should have 25000 items. not work.

when checked logs, see full gc being done , job gets stuck there. please can me out here. alternatives working good.

i tried increasing executor memory no luck.

example of rule:

rule "get people name alfredo , age 55" salience 1      when        accumulate($p: person(name == "alfredo", age == 55);        $personlist: collectlist( $p ), $cnt: count($p); $cnt>0)            create_person_result(kcontext, min($personlist, "name"))     end

thanks,

pranoti





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