danny0405 commented on code in PR #13699:
URL: https://github.com/apache/hudi/pull/13699#discussion_r2265614815
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hudi-common/src/main/java/org/apache/hudi/common/table/read/UpdateProcessor.java:
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@@ -80,17 +99,58 @@ public BufferedRecord<T> processUpdate(String recordKey,
BufferedRecord<T> previ
}
return null;
} else {
- T prevRow = previousRecord != null ? previousRecord.getRecord() : null;
- T mergedRow = mergedRecord.getRecord();
- if (prevRow != null && prevRow != mergedRow) {
- mergedRecord.setHoodieOperation(HoodieOperation.UPDATE_AFTER);
- readStats.incrementNumUpdates();
- } else if (prevRow == null) {
- mergedRecord.setHoodieOperation(HoodieOperation.INSERT);
- readStats.incrementNumInserts();
+ return handleNonDeletes(previousRecord, mergedRecord);
+ }
+ }
+
+ protected BufferedRecord<T> handleNonDeletes(BufferedRecord<T>
previousRecord, BufferedRecord<T> mergedRecord) {
+ T prevRow = previousRecord != null ? previousRecord.getRecord() : null;
+ T mergedRow = mergedRecord.getRecord();
+ if (prevRow != null && prevRow != mergedRow) {
+ mergedRecord.setHoodieOperation(HoodieOperation.UPDATE_AFTER);
+ readStats.incrementNumUpdates();
+ } else if (prevRow == null) {
+ mergedRecord.setHoodieOperation(HoodieOperation.INSERT);
+ readStats.incrementNumInserts();
+ }
+ return mergedRecord.seal(readerContext);
+ }
+ }
+
+ class PayloadUpdateProcessor<T> extends StandardUpdateProcessor<T> {
+ private final String payloadClass;
+ private final Properties properties;
+
+ public PayloadUpdateProcessor(HoodieReadStats readStats,
HoodieReaderContext<T> readerContext, boolean emitDeletes,
+ Properties properties, String payloadClass) {
+ super(readStats, readerContext, emitDeletes);
+ this.payloadClass = payloadClass;
+ this.properties = properties;
+ }
+
+ @Override
+ protected BufferedRecord<T> handleNonDeletes(BufferedRecord<T>
previousRecord, BufferedRecord<T> mergedRecord) {
+ if (previousRecord == null) {
+ // special case for payloads when there is no previous record
+ Schema recordSchema =
readerContext.getRecordContext().decodeAvroSchema(mergedRecord.getSchemaId());
+ GenericRecord record =
readerContext.getRecordContext().convertToAvroRecord(mergedRecord.getRecord(),
recordSchema);
+ HoodieAvroRecord hoodieRecord = new HoodieAvroRecord<>(null,
HoodieRecordUtils.loadPayload(payloadClass, record,
mergedRecord.getOrderingValue()));
+ try {
+ if (hoodieRecord.shouldIgnore(recordSchema, properties)) {
+ return null;
+ } else {
+ Schema readerSchema =
readerContext.getSchemaHandler().getRequestedSchema();
+ // If the record schema is different from the reader schema,
rewrite the record using the payload methods to ensure consistency with legacy
writer paths
+ if (!readerSchema.equals(recordSchema)) {
Review Comment:
This could be super costly.
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