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Posted to issues@flink.apache.org by "Fabian Hueske (JIRA)" <ji...@apache.org> on 2016/05/19 12:08:12 UTC

[jira] [Created] (FLINK-3934) Prevent translation of non-equi joins in DataSetJoinRule

Fabian Hueske created FLINK-3934:
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             Summary: Prevent translation of non-equi joins in DataSetJoinRule
                 Key: FLINK-3934
                 URL: https://issues.apache.org/jira/browse/FLINK-3934
             Project: Flink
          Issue Type: Bug
          Components: Table API
    Affects Versions: 1.1.0
            Reporter: Fabian Hueske
            Assignee: Fabian Hueske


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}}.



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