LiemLin commented on issue #2421: workflow lineage URL: https://github.com/apache/incubator-dolphinscheduler/pull/2421#issuecomment-615057130 > > Thanks!! I changed the db,used mysql db,it can work.I made a cyclic dependency then it occured StackOverflowError. > > Such as the follow steps. > > 1.process definiton A depend on process definition B. > > 2.process definiton B depend on process definition C. > > 3.process definiton C depend on process definition A. > > Then it will occur StackOverflowError. > >  > > Endless loop。。。 Isn't workflow lineage a directed acyclic graph, can it be cycled？ > I will see how to prevent an endless loop  Like this? Is this cycle reasonable?
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