[ https://issues.apache.org/jira/browse/BEAM-3721?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kenneth Knowles reassigned BEAM-3721: ------------------------------------- Assignee: (was: Kenneth Knowles) > UNION ALL should be implemented via Flatten > ------------------------------------------- > > Key: BEAM-3721 > URL: https://issues.apache.org/jira/browse/BEAM-3721 > Project: Beam > Issue Type: Improvement > Components: dsl-sql > Reporter: Kenneth Knowles > Priority: Major > > Currently, UNION ALL is implemented as an abstracted set operation that goes > through CoGroupByKey, when a flatten will do. This is also incompatible with > triggers that fire more than once. -- This message was sent by Atlassian JIRA (v7.6.3#76005)