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ASF GitHub Bot commented on FLINK-3849: --------------------------------------- Github user KurtYoung commented on the issue: https://github.com/apache/flink/pull/3520 Sure, so the result is there will be 2 commits to master repository? > Add FilterableTableSource interface and translation rule > -------------------------------------------------------- > > Key: FLINK-3849 > URL: https://issues.apache.org/jira/browse/FLINK-3849 > Project: Flink > Issue Type: New Feature > Components: Table API & SQL > Reporter: Fabian Hueske > Assignee: Kurt Young > > Add a {{FilterableTableSource}} interface for {{TableSource}} implementations > which support filter push-down. > The interface could look as follows > {code} > def trait FilterableTableSource { > // returns unsupported predicate expression > def setPredicate(predicate: Expression): Expression > } > {code} > In addition we need Calcite rules to push a predicate (or parts of it) into a > TableScan that refers to a {{FilterableTableSource}}. We might need to tweak > the cost model as well to push the optimizer in the right direction. -- This message was sent by Atlassian JIRA (v6.3.15#6346)