Jark Wu created FLINK-19824:
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Summary: Refactor and merge SupportsComputedColumnPushDown and
SupportsWatermarkPushDown interfaces
Key: FLINK-19824
URL: https://issues.apache.org/jira/browse/FLINK-19824
Project: Flink
Issue Type: Sub-task
Components: Table SQL / API
Reporter: Jark Wu
As discussed in mailing list [1], the existing SupportsComputedColumnPushDown
and SupportsWatermarkPushDown are confusing and hard to implement for
connectors. The
{{SupportsComputedColumnPushDown}} only used for watermark push down.
Therefore,
combining them into a single interface {{SupportsWatermarkPushDown}} would be
better and also work. The proposed interface looks like this:
{code:java}
public interface SupportsWatermarkPushDown {
void
applyWatermark(org.apache.flink.table.sources.wmstrategies.WatermarkStrategy<RowData>
watermarkStrategy);
}
{code}
[1]:
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/Merge-SupportsComputedColumnPushDown-and-SupportsWatermarkPushDown-td44387.html
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