[rules-users] fireAllRules() doesn't return back

[Neel]

Hi,I'm using drools-5.3.0.Beta1. I've following rule definition:

import java.util.*;


declare Student
   name : String @key
   subjectGradeMap : HashMap   
end
 
rule "Subject grade points"
dialect "mvel"
when
   $u : Student()
then
   $u.subjectGradeMap["CompSc"] += 100;
   System.out.println("Marks added");
end
While executing RHS of above rule, fireAllRules() doesn't return, it hangs.Please help.Thanks,Neel
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