walterddr opened a new pull request #8468: [FLINK-12399][table] Adding PushDownTableSource interface to fix FilterableTableSource applyPredicate problem URL: https://github.com/apache/flink/pull/8468 ## What is the purpose of the change This PR fixes the problem: FilterableTableSource does not generate a new digest after the predicate push down unless `explainSource()` API is explicitly override. ## Brief change log - Adding a PushDownTableSource API that all predicate pushdown implementation should extend and an override for the `explainPushDown` is required. - Changed the `explainTerm` API from `FlinkLogicalTableSourceScan` and `PhysicalTableSourceScan` to include both `explainSource` and `explainPushDown` - Changed the `TestFilterableTableSource` accordingly - Changed the corresponding dependent APIs such as `ProjectableTableSource` and `NestedProjectableTableSource`, `OrcTableSource` and `HBaseTableSource` ## Verifying this change - Covered for current tests. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): no - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no - The serializers: no - The runtime per-record code paths (performance sensitive): no - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: no - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? no - If yes, how is the feature documented? n/a
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