[FLINK-3934] Prevent translation of non-equi joins in DataSetJoinRule

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.0
• Fix Version/s: 1.1.0
• Component/s: Table SQL / API
• Assignee: Fabian Hueske
• Reporter: Fabian Hueske
• Created: 19/May/16 12:07
• Updated: 19/May/16 20:26
• Resolved: 19/May/16 20:26

Description

At the moment, also non-equi joins are translated into {{DataSetJoin}}s.
To prevent such plans from being picked, we assign huge costs and eventually fail their translation into DataSet programs.

A better solution is to prevent a non-equi join from being translated into a DataSetJoin in the DataSetJoinRule.