Greg Hogan created FLINK-2668: --------------------------------- Summary: ProjectOperator method to close projection Key: FLINK-2668 URL: https://issues.apache.org/jira/browse/FLINK-2668 Project: Flink Issue Type: Improvement Components: Java API Affects Versions: master Reporter: Greg Hogan Priority: Minor
I have come across an issue in my code where I called {noformat}project(...){noformat} on a DataSet which was already a {noformat}ProjectOperator{noformat}. Instead of reducing the number of fields from 2 to 1 this instead increased the number of fields from 2 to 3 resulting in {noformat}org.apache.flink.api.common.functions.InvalidTypesException: Input mismatch: Tuple arity '3' expected but was '1'.{noformat} when processing the next operator. This can be resolved by adding an optional explicit call to conclude the projection, perhaps {noformat}ProjectOperator.closeProjection(){noformat}. Can this be done without creating a new no-op operator? -- This message was sent by Atlassian JIRA (v6.3.4#6332)