advancedxy commented on code in PR #10755:
URL: https://github.com/apache/iceberg/pull/10755#discussion_r1696950601


##########
core/src/main/java/org/apache/iceberg/TableMetadata.java:
##########
@@ -1102,6 +1121,22 @@ public Builder setDefaultPartitionSpec(int specId) {
       return this;
     }
 
+    private Builder removePartitionSpec(PartitionSpec spec) {
+      Preconditions.checkArgument(
+          changes.isEmpty(), "Cannot remove partition spec with other metadata 
update");
+      Preconditions.checkArgument(
+          spec.specId() != defaultSpecId, "Cannot remove default partition 
spec");
+      PartitionSpec toBeRemoved = specsById.remove(spec.specId());
+      Preconditions.checkArgument(
+          toBeRemoved != null && toBeRemoved.equals(spec),
+          "Cannot remove an unknown spec, spec id: %s",
+          spec.specId());
+      this.specs =

Review Comment:
   Addressed in 
https://github.com/apache/iceberg/pull/10755/commits/190dde6439ff3eb2edc1d111fca1c7e70f085fb7,
 removing an already removed unused spec should not cause a failure then.



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