Adding specId for partitions metadata table

core/src/main/java/org/apache/iceberg/PartitionsTable.java

@@ -45,9 +45,10 @@ public class PartitionsTable extends BaseMetadataTable {
     super(ops, table, name);
 
     this.schema = new Schema(
-        Types.NestedField.required(1, "partition", table.spec().partitionType()),
+        Types.NestedField.required(1, "partition", Partitioning.partitionType(table)),
         Types.NestedField.required(2, "record_count", Types.LongType.get()),
-        Types.NestedField.required(3, "file_count", Types.IntegerType.get())
+        Types.NestedField.required(3, "file_count", Types.IntegerType.get()),
+        Types.NestedField.required(4, "spec_id", Types.IntegerType.get())
     );
   }
 
@@ -89,7 +90,7 @@ private DataTask task(StaticTableScan scan) {
   }
 
   private static StaticDataTask.Row convertPartition(Partition partition) {
-    return StaticDataTask.Row.of(partition.key, partition.recordCount, partition.fileCount);
+    return StaticDataTask.Row.of(partition.key, partition.recordCount, partition.fileCount, partition.specId);
   }
 
   private static Iterable<Partition> partitions(StaticTableScan scan) {
@@ -167,16 +168,19 @@ static class Partition {
     private final StructLike key;
     private long recordCount;
     private int fileCount;
+    private int specId;
 
     Partition(StructLike key) {
       this.key = key;
       this.recordCount = 0;
       this.fileCount = 0;
+      this.specId = 0;
     }
 
     void update(DataFile file) {
       this.recordCount += file.recordCount();
       this.fileCount += 1;
+      this.specId = file.specId();
     }
   }
 }

spark/v2.4/spark/src/test/java/org/apache/iceberg/spark/source/TestIcebergSourceTablesBase.java

@@ -1110,11 +1110,13 @@ public void testPartitionsTable() {
         .set("partition", partitionBuilder.set("id", 1).build())
         .set("record_count", 1L)
         .set("file_count", 1)
+        .set("spec_id", 0)
         .build());
     expected.add(builder
         .set("partition", partitionBuilder.set("id", 2).build())
         .set("record_count", 1L)
         .set("file_count", 1)
+        .set("spec_id", 0)
         .build());
 
     Assert.assertEquals("Partitions table should have two rows", 2, expected.size());

spark/v3.0/spark/src/test/java/org/apache/iceberg/spark/source/TestIcebergSourceTablesBase.java

@@ -1111,11 +1111,13 @@ public void testPartitionsTable() {
         .set("partition", partitionBuilder.set("id", 1).build())
         .set("record_count", 1L)
         .set("file_count", 1)
+        .set("spec_id", 0)
         .build());
     expected.add(builder
         .set("partition", partitionBuilder.set("id", 2).build())
         .set("record_count", 1L)
         .set("file_count", 1)
+        .set("spec_id", 0)
         .build());
 
     Assert.assertEquals("Partitions table should have two rows", 2, expected.size());

spark/v3.1/spark/src/test/java/org/apache/iceberg/spark/source/TestIcebergSourceTablesBase.java

@@ -1111,11 +1111,13 @@ public void testPartitionsTable() {
         .set("partition", partitionBuilder.set("id", 1).build())
         .set("record_count", 1L)
         .set("file_count", 1)
+        .set("spec_id", 0)
         .build());
     expected.add(builder
         .set("partition", partitionBuilder.set("id", 2).build())
         .set("record_count", 1L)
         .set("file_count", 1)
+        .set("spec_id", 0)
         .build());
 
     Assert.assertEquals("Partitions table should have two rows", 2, expected.size());

spark/v3.2/spark/src/test/java/org/apache/iceberg/spark/source/TestIcebergSourceTablesBase.java

@@ -1112,11 +1112,13 @@ public void testPartitionsTable() {
         .set("partition", partitionBuilder.set("id", 1).build())
         .set("record_count", 1L)
         .set("file_count", 1)
+        .set("spec_id", 0)
         .build());
     expected.add(builder
         .set("partition", partitionBuilder.set("id", 2).build())
         .set("record_count", 1L)
         .set("file_count", 1)
+        .set("spec_id", 0)
         .build());
 
     Assert.assertEquals("Partitions table should have two rows", 2, expected.size());