MDEV-16249 CHECKSUM TABLE for a spider table is not parallel and saves all...

MDEV-16249 CHECKSUM TABLE for a spider table is not parallel and saves all data in memory in the spider head by default (#1328)

followup for be5c432a

ha_partition::calculate_checksum() has to invoke calculate_checksum()
for partitions unconditionally, not under (HA_HAS_OLD_CHECKSUM | HA_HAS_NEW_CHECKSUM).
Because the server uses ::info() to ask for a live checksum, while
calculate_checksum() must, precisely, calculate it the slow way,
also for tables that don't have the live checksum at all.

Also, fix the compilation on Windows (ha_checksum/ulonglong type mix).

sql/ha_partition.cc

@@ -10645,22 +10645,20 @@ int ha_partition::calculate_checksum()
     }
   }
   m_pre_calling= FALSE;
-  if ((table_flags() & (HA_HAS_OLD_CHECKSUM | HA_HAS_NEW_CHECKSUM)))
+
+  handler **file= m_file;
+  do
   {
-    handler **file= m_file;
-    do
+    if ((error= (*file)->calculate_checksum()))
     {
-      if ((error= (*file)->calculate_checksum()))
-      {
-        DBUG_RETURN(error);
-      }
-      if (!(*file)->stats.checksum_null)
-      {
-        stats.checksum+= (*file)->stats.checksum;
-        stats.checksum_null= FALSE;
-      }
-    } while (*(++file));
-  }
+      DBUG_RETURN(error);
+    }
+    if (!(*file)->stats.checksum_null)
+    {
+      stats.checksum+= (*file)->stats.checksum;
+      stats.checksum_null= FALSE;
+    }
+  } while (*(++file));
   DBUG_RETURN(0);
 }
 

sql/handler.cc

@@ -5054,7 +5054,7 @@ int handler::calculate_checksum()
       return HA_ERR_ABORTED_BY_USER;
 
     ha_checksum row_crc= 0;
-    error= table->file->ha_rnd_next(table->record[0]);
+    error= ha_rnd_next(table->record[0]);
     if (error)
       break;
 
@@ -5108,7 +5108,7 @@ int handler::calculate_checksum()
 
     stats.checksum+= row_crc;
   }
-  table->file->ha_rnd_end();
+  ha_rnd_end();
   return error == HA_ERR_END_OF_FILE ? 0 : error;
 }
 

storage/spider/ha_spider.h

@@ -245,7 +245,7 @@ class ha_spider: public handler
 #endif
   ha_rows            table_rows;
 #ifdef HA_HAS_CHECKSUM_EXTENDED
-  ulonglong          checksum_val;
+  ha_checksum        checksum_val;
   bool               checksum_null;
   uint               action_flags;
 #endif

storage/spider/spd_db_mysql.cc

@@ -1142,9 +1142,9 @@ int spider_db_mbase_result::fetch_simple_action(
       if (mysql_row[position])
       {
         spider->checksum_val =
-          (ulonglong) my_strtoll10(mysql_row[position], (char**) NULL,
+          (ha_checksum) my_strtoll10(mysql_row[position], (char**) NULL,
           &error_num);
-        DBUG_PRINT("info", ("spider checksum=%llu", spider->checksum_val));
+        DBUG_PRINT("info", ("spider checksum=%llu", (ulonglong)spider->checksum_val));
         spider->checksum_null = FALSE;
       } else {
         spider->checksum_null = TRUE;