twalthr commented on a change in pull request #19236:
URL: https://github.com/apache/flink/pull/19236#discussion_r840393194
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File path:
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/connectors/DynamicSourceUtils.java
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@@ -71,6 +71,9 @@
@Internal
public final class DynamicSourceUtils {
+ // Ensures that physical and metadata columns don't collide.
+ public static final String METADATA_COLUMN_PREFIX = "$metadata$";
Review comment:
the source and sink stack are completely separate, that's why we also
have separate util classes
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