jonvex commented on code in PR #13987:
URL: https://github.com/apache/hudi/pull/13987#discussion_r2392863898
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hudi-common/src/main/java/org/apache/hudi/common/table/read/FileGroupReaderSchemaHandler.java:
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@@ -74,6 +74,10 @@ public class FileGroupReaderSchemaHandler<T> {
// requiredSchema: the requestedSchema with any additional columns required
for merging etc
protected final Schema requiredSchema;
+ // the schema for updates, usually it equals with the requiredSchema,
+ // the only exception is for incoming records, which do not include the
metadata fields.
+ protected Schema schemaForUpdates;
Review Comment:
your intention
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