Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3860#discussion_r115683417
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/nodes/logical/FlinkLogicalTableSourceScan.scala
---
@@ -104,6 +105,21 @@ class FlinkLogicalTableSourceScan(
s"Scan($s)"
}
}
+
+ override def estimateRowCount(mq: RelMetadataQuery): Double = {
+ val tableSourceTable = getTable.unwrap(classOf[TableSourceTable[_]])
+
+ if (tableSourceTable.getStatistic != FlinkStatistic.UNKNOWN) {
--- End diff --
Same as above. We somehow need to incorporate the selectivity of a
pushed-down filter.
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