bad split repro

Author: msbutler

pkg/kv/bulk/sst_batcher_test.go

@@ -790,3 +790,108 @@ func TestSSTBatcherCloseWithoutFlush(t *testing.T) {
 	// There should be no rows written since all the flushes were blocked and cancelled.
 	tdb.CheckQueryResults(t, `SELECT count(*) FROM kv`, [][]string{{"0"}})
 }
+
+func TestSSTBatcherSplitBetweenColumnFamilies(t *testing.T) {
+	defer leaktest.AfterTest(t)()
+	defer log.Scope(t).Close(t)
+	ctx := context.Background()
+
+	tc := testcluster.StartTestCluster(t, 5, base.TestClusterArgs{})
+	defer tc.Stopper().Stop(ctx)
+	s := tc.ApplicationLayer(0)
+	db := tc.ServerConn(0)
+	kvDB := s.DB()
+
+	tdb := sqlutils.MakeSQLRunner(db)
+
+	// Create a table with multiple column families and a secondary index.
+	tdb.Exec(t, `
+		CREATE TABLE t (
+			pk INT PRIMARY KEY,
+			a INT,
+			b STRING,
+			INDEX idx_a (a),
+			FAMILY f0 (pk, a),
+			FAMILY f1 (b)
+		)
+	`)
+
+	// Insert some rows.
+	for i := 1; i <= 11; i++ {
+		tdb.Exec(t, `INSERT INTO t VALUES ($1, $2, $3)`, i, i*10, fmt.Sprintf("b-%d", i))
+	}
+
+	// Get the table descriptor to construct keys.
+	tableDesc := desctestutils.TestingGetPublicTableDescriptor(kvDB, s.Codec(), "defaultdb", "t")
+	tableID := tableDesc.GetID()
+
+	// The primary index has ID 1.
+	indexPrefix := s.Codec().IndexPrefix(uint32(tableID), 1)
+
+	// Create unsafe split keys between family 0 and family 1 for each row.
+	for pk := 1; pk <= 11; pk++ {
+		pkKey := encoding.EncodeVarintAscending(append([]byte{}, indexPrefix...), int64(pk))
+		family0Key := keys.MakeFamilyKey(pkKey, 0)
+		unsafeSplitKey := roachpb.Key(family0Key).Next()
+
+		splitReq := &kvpb.AdminSplitRequest{
+			RequestHeader: kvpb.RequestHeader{
+				Key: unsafeSplitKey,
+			},
+			SplitKey: unsafeSplitKey,
+		}
+
+		_, pErr := kv.SendWrapped(ctx, kvDB.NonTransactionalSender(), splitReq)
+		require.Nil(t, pErr, "AdminSplit at unsafe key should succeed")
+	}
+
+	// Use the first unsafe split key for subsequent checks.
+	//pkKey := encoding.EncodeVarintAscending(append([]byte{}, indexPrefix...), 1)
+	//family0Key := keys.MakeFamilyKey(pkKey, 0)
+	//unsafeSplitKey := roachpb.Key(family0Key).Next()
+	//t.Logf("Family 0 key for pk=1: %s", roachpb.Key(family0Key))
+	//t.Logf("Unsafe split key: %s", unsafeSplitKey)
+
+	tdb.Exec(t, `ALTER TABLE t SCATTER`)
+
+	// Clear the range cache to ensure it's updated with all the new splits.
+	// This ensures any subsequent operations have fresh range descriptor information.
+	s.DistSenderI().(*kvcoord.DistSender).RangeDescriptorCache().Clear()
+
+	// Verify the split occurred by checking range boundaries.
+	ranges := tdb.QueryStr(t, `SELECT start_key, end_key, replicas FROM [SHOW RANGES FROM TABLE t]`)
+	t.Logf("Ranges after split:")
+	for i, r := range ranges {
+		t.Logf("  Range %d: [%s, %s), replicas %s", i, r[0], r[1], r[2])
+	}
+
+	tdb.Exec(t, `SET streamer_enabled = true`)
+
+	// Query each value of 'a' individually in a loop
+	for pk := 1; pk <= 11; pk++ {
+		aValue := pk * 10
+		row := tdb.QueryStr(t, `SELECT * FROM t WHERE a = $1`, aValue)
+		expectedRow := [][]string{{fmt.Sprintf("%d", pk), fmt.Sprintf("%d", aValue), fmt.Sprintf("b-%d", pk)}}
+		require.Equal(t, expectedRow, row, "row with pk=%d should have correct values", pk)
+	}
+
+	// Scan over the table key space and verify the row is split.
+	//tableSpan := tableDesc.TableSpan(s.Codec())
+
+	//kvs, err := kvDB.Scan(ctx, tableSpan.Key, unsafeSplitKey, 0 /* maxRows */)
+	//require.NoError(t, err)
+
+	//for i, kv := range kvs {
+	//	t.Logf("(Before Split Key) Key %d: %s (len=%d, value len=%d)", i, kv.Key, len(kv.Key), len(kv.Value.RawBytes))
+	//}
+
+	//afterKvs, err := kvDB.Scan(ctx, unsafeSplitKey, tableSpan.EndKey, 0 /* maxRows */)
+	//require.NoError(t, err)
+
+	// for i, kv := range afterKvs {
+	//	t.Logf("(After Split Key) Key %d: %s (len=%d, value len=%d)", i, kv.Key, len(kv.Key), len(kv.Value.RawBytes))
+	//}
+
+	//err := sqlutils.RunInspect(db, "defaultdb", "t")
+	//require.NoError(t, err)
+}