[FLINK-35982] Fix transform metadata config doesn't work if no projection block was provided #3592
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# Conflicts: # flink-cdc-composer/src/test/java/org/apache/flink/cdc/composer/flink/FlinkPipelineTransformITCase.java # Conflicts: # flink-cdc-composer/src/test/java/org/apache/flink/cdc/composer/flink/FlinkPipelineTransformITCase.java # Conflicts: # flink-cdc-composer/src/test/java/org/apache/flink/cdc/composer/flink/FlinkPipelineTransformITCase.java # flink-cdc-runtime/src/main/java/org/apache/flink/cdc/runtime/operators/transform/TransformExpressionCompiler.java
lvyanquan
approved these changes
Sep 4, 2024
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This closes FLINK-35982.
One may readjust source table primary keys, partition keys, table options by specifying them in a Transform block like this:
However, if the projection field is omitted (which fallbacks to default behavior that does not change any source table columns), such configuration will not take effect:
The underlying reason is transform blocks without
projectionwas simply ignored byPreTransformOperator, which isn't accurate since other options like primary keys, partition keys should work without projecting original columns.