danny0405 commented on code in PR #10727:
URL: https://github.com/apache/hudi/pull/10727#discussion_r1503635758
##########
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/table/action/commit/HoodieMergeHelper.java:
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@@ -202,7 +202,9 @@ private Option<Function<HoodieRecord, HoodieRecord>>
composeSchemaEvolutionTrans
Schema newWriterSchema =
AvroInternalSchemaConverter.convert(mergedSchema, writerSchema.getFullName());
Schema writeSchemaFromFile =
AvroInternalSchemaConverter.convert(writeInternalSchema,
newWriterSchema.getFullName());
boolean needToReWriteRecord = sameCols.size() !=
colNamesFromWriteSchema.size()
- ||
SchemaCompatibility.checkReaderWriterCompatibility(newWriterSchema,
writeSchemaFromFile).getType() ==
org.apache.avro.SchemaCompatibility.SchemaCompatibilityType.COMPATIBLE;
+ ||
!(SchemaCompatibility.checkReaderWriterCompatibility(newWriterSchema,
writeSchemaFromFile).getType()
Review Comment:
So there is no need for rewrite if the schema is compatible and the fields
number equals?
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