wzx140 commented on code in PR #5629:
URL: https://github.com/apache/hudi/pull/5629#discussion_r909635425


##########
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/table/action/compact/HoodieCompactor.java:
##########
@@ -194,6 +194,8 @@ public List<WriteStatus> compact(HoodieCompactionHandler 
compactionHandler,
         
.withBitCaskDiskMapCompressionEnabled(config.getCommonConfig().isBitCaskDiskMapCompressionEnabled())
         .withOperationField(config.allowOperationMetadataField())
         .withPartition(operation.getPartitionPath())
+        .withRecordType(config.getRecordType())
+        .withCombiningEngineClassFQN(config.getMergeClass())

Review Comment:
   Fixed



##########
hudi-common/src/main/java/org/apache/hudi/common/table/log/AbstractHoodieLogRecordReader.java:
##########
@@ -140,29 +136,31 @@ public abstract class AbstractHoodieLogRecordReader {
   private Option<String> partitionName;
   // Populate meta fields for the records
   private boolean populateMetaFields = true;
+  // Record type read from log block
+  protected final HoodieRecordType recordType;
 
   protected AbstractHoodieLogRecordReader(FileSystem fs, String basePath, 
List<String> logFilePaths,
                                           Schema readerSchema,
                                           String latestInstantTime, boolean 
readBlocksLazily, boolean reverseReader,
                                           int bufferSize, Option<InstantRange> 
instantRange,
-                                          boolean withOperationField) {
+                                          boolean withOperationField, 
HoodieRecordType recordType, String combiningEngineClassFQN) {
     this(fs, basePath, logFilePaths, readerSchema, latestInstantTime, 
readBlocksLazily, reverseReader, bufferSize,
-        instantRange, withOperationField, true, Option.empty(), 
InternalSchema.getEmptyInternalSchema());
+        instantRange, withOperationField, true, Option.empty(), 
InternalSchema.getEmptyInternalSchema(), recordType, combiningEngineClassFQN);
   }
 
   protected AbstractHoodieLogRecordReader(FileSystem fs, String basePath, 
List<String> logFilePaths,
                                           Schema readerSchema, String 
latestInstantTime, boolean readBlocksLazily,
                                           boolean reverseReader, int 
bufferSize, Option<InstantRange> instantRange,
                                           boolean withOperationField, boolean 
forceFullScan,
-                                          Option<String> partitionName, 
InternalSchema internalSchema) {
+                                          Option<String> partitionName, 
InternalSchema internalSchema, HoodieRecordType recordType, String 
combiningEngineClassFQN) {
     this.readerSchema = readerSchema;
     this.latestInstantTime = latestInstantTime;
     this.hoodieTableMetaClient = 
HoodieTableMetaClient.builder().setConf(fs.getConf()).setBasePath(basePath).build();
     // load class from the payload fully qualified class name
     HoodieTableConfig tableConfig = 
this.hoodieTableMetaClient.getTableConfig();
     this.payloadClassFQN = tableConfig.getPayloadClass();
     this.preCombineField = tableConfig.getPreCombineField();
-    this.mergeClassFQN = tableConfig.getMergeClass();
+    this.mergeClassFQN = combiningEngineClassFQN;

Review Comment:
   Fixed



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