szehon-ho commented on code in PR #6365:
URL: https://github.com/apache/iceberg/pull/6365#discussion_r1042557855


##########
core/src/main/java/org/apache/iceberg/BaseMetadataTable.java:
##########
@@ -64,9 +64,12 @@ protected BaseMetadataTable(TableOperations ops, Table 
table, String name) {
    */
   static PartitionSpec transformSpec(Schema metadataTableSchema, PartitionSpec 
spec) {
     PartitionSpec.Builder identitySpecBuilder =
-        PartitionSpec.builderFor(metadataTableSchema).checkConflicts(false);
+        PartitionSpec.builderFor(metadataTableSchema)

Review Comment:
   Before this change, predicate pushdown would make the PositionDeletes scan 
tasks have wrong partition field id, spec id, so they will not work in the 
DeleteFile read.
   
   Though it only happens in corner cases like dropped partition fields (where 
the auto-generated field-ids are not correct anymore).  Added a test for this 
in TestMetadataTableScansWithPartitionEvolution



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