danielcweeks commented on code in PR #12476:
URL: https://github.com/apache/iceberg/pull/12476#discussion_r1992243026


##########
core/src/main/java/org/apache/iceberg/AllManifestsTable.java:
##########
@@ -192,13 +191,11 @@ public List<DeleteFile> deletes() {
     @Override
     public CloseableIterable<StructLike> rows() {
       try (CloseableIterable<ManifestFile> manifests =
-          Avro.read(io.newInputFile(manifestListLocation))
-              .rename("manifest_file", GenericManifestFile.class.getName())
-              .rename("partitions", 
GenericPartitionFieldSummary.class.getName())
-              .rename("r508", GenericPartitionFieldSummary.class.getName())
+          InternalData.read(FileFormat.AVRO, 
io.newInputFile(manifestListLocation))
+              .setRootType(GenericManifestFile.class)
+              .setCustomType(508, GenericPartitionFieldSummary.class)

Review Comment:
   The closes thing is probably to lookup the id from the schema:
   
   ```
   ManifestFile.SCHEMA.findField("partitions.element").fieldId()
   ```
   
   I'll use that since we don't have any static references to the field ids in 
these schemas.  This is clearly more readable.



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