RussellSpitzer commented on code in PR #9242:
URL: https://github.com/apache/iceberg/pull/9242#discussion_r1419346934


##########
spark/v3.5/spark-extensions/src/test/java/org/apache/iceberg/spark/extensions/TestRewriteManifestsProcedure.java:
##########
@@ -331,4 +331,33 @@ public void testReplacePartitionField() {
             row(1, Timestamp.valueOf("2022-01-01 10:00:00"), 
Date.valueOf("2022-01-01"))),
         sql("SELECT * FROM %s WHERE ts < current_timestamp()", tableName));
   }
+
+  @Test
+  public void testWriteManifestWithSpecId() {
+    sql(
+        "CREATE TABLE %s (id int, dt string, hr string) USING iceberg 
PARTITIONED BY (dt)",
+        tableName);
+
+    sql("INSERT INTO %s VALUES (1, '2024-01-01', '00')", tableName);
+    sql("INSERT INTO %s VALUES (2, '2024-01-01', '00')", tableName);
+    assertEquals(
+        "Should have 2 manifests",
+        ImmutableList.of(row(2L)),
+        sql("SELECT count(*) FROM %s.manifests", tableName));
+
+    sql("ALTER TABLE %s ADD PARTITION FIELD hr", tableName);

Review Comment:
   Could you please add more rows here and prove that you then have manifests 
from multiple spec's so that you can prove the specification only combined 
manifests from the correctly specified spec



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