Daniel Kuppitz created TINKERPOP-2095: -----------------------------------------
Summary: GroupStep looks for irrelevant barrier steps Key: TINKERPOP-2095 URL: https://issues.apache.org/jira/browse/TINKERPOP-2095 Project: TinkerPop Issue Type: Bug Components: process Affects Versions: 3.3.4 Reporter: Daniel Kuppitz Assignee: Daniel Kuppitz {{GroupStep}} looks for {{Barrier}} step to determine the reducing bi-operator. This is wrong and I'm really surprised that this has never been spotted before. {noformat} gremlin> g.V().hasLabel('person').as('p').out('created').group().by('name').by(select('p').values('age').sum()) java.lang.Long cannot be cast to org.apache.tinkerpop.gremlin.process.traversal.traverser.util.TraverserSet Type ':help' or ':h' for help. Display stack trace? [yN] {noformat} In the query above the first barrier step is a {{NoOpBarrier}} step (added by {{PathRetractionStrategy}}). This step obviously has no reducing bi-operator. What we really want to do is look for the first reducing barrier step. -- This message was sent by Atlassian JIRA (v7.6.3#76005)