[ https://issues.apache.org/jira/browse/BEAM-2007?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Thomas Groh reassigned BEAM-2007: --------------------------------- Assignee: (was: Thomas Groh) This is fixed in the Java Dataflow runner. The Python Dataflow runner will have to perform a similar change. > DataflowRunner drops Reads with no consumers > -------------------------------------------- > > Key: BEAM-2007 > URL: https://issues.apache.org/jira/browse/BEAM-2007 > Project: Beam > Issue Type: Bug > Components: runner-dataflow > Reporter: Daniel Halperin > Fix For: First stable release > > > Basically, if a pipeline has "just" a Read with no consumers, the optimizer > in Dataflow will drop it. To preserve Beam semantics, we do want to run the > Read and drop its output, e.g., because the Read may have side effects that > we're testing for. > Is it possible with pipeline surgery to find such Reads and add an Identity > ParDo to them? -- This message was sent by Atlassian JIRA (v6.3.15#6346)