Fabian Hueske created FLINK-7142: ------------------------------------ Summary: Scala DataSet API ignores ResultTypeQueryable interface Key: FLINK-7142 URL: https://issues.apache.org/jira/browse/FLINK-7142 Project: Flink Issue Type: Bug Components: DataSet API, Scala API Affects Versions: 1.3.1, 1.4.0 Reporter: Fabian Hueske
The {{ResultTypeQueryable}} is used to specify the return type of user-defined functions. The Scala DataSet API ignores this interface. The only way to override the inferred type information is to use implicit values. However, the {{ResultTypeQueryable}} interface has the nice property that the return type is defined in the actual function, whereas implicit types are defined in the program, i.e., outside of the function. IMO, the Scala DataSet API should also support the {{ResultTypeQueryable}} interface. What do you think [~aljoscha], [~till.rohrmann]? Was it a conscious decision to only support implicit type definitions? -- This message was sent by Atlassian JIRA (v6.4.14#64029)