Fix for bug#4730

ndb/include/ndbapi/Ndb.hpp

@@ -1414,12 +1414,19 @@ public:
    *
    * @return tuple id or 0 on error
    */
-  Uint64 getAutoIncrementValue(const char* aTableName, Uint32 cacheSize = 1);
+  Uint64 getAutoIncrementValue(const char* aTableName, 
-  bool setAutoIncrementValue(const char* aTableName, Uint64 val, bool increase = false);
+			       Uint32 cacheSize = 1);
-  Uint64 getTupleIdFromNdb(const char* aTableName, Uint32 cacheSize = 1000 );
+  Uint64 readAutoIncrementValue(const char* aTableName);
-  Uint64 getTupleIdFromNdb(Uint32 aTableId, Uint32 cacheSize = 1000 );
+  bool setAutoIncrementValue(const char* aTableName, Uint64 val, 
-  bool setTupleIdInNdb(const char* aTableName, Uint64 val, bool increase = false);
+			     bool increase = false);
-  bool setTupleIdInNdb(Uint32 aTableId, Uint64 val, bool increase = false);
+  Uint64 getTupleIdFromNdb(const char* aTableName, 
+			   Uint32 cacheSize = 1000);
+  Uint64 getTupleIdFromNdb(Uint32 aTableId, 
+			   Uint32 cacheSize = 1000);
+  Uint64 readTupleIdFromNdb(Uint32 aTableId);
+  bool setTupleIdInNdb(const char* aTableName, Uint64 val, 
+		       bool increase);
+  bool setTupleIdInNdb(Uint32 aTableId, Uint64 val, bool increase);
   Uint64 opTupleIdOnNdb(Uint32 aTableId, Uint64 opValue, Uint32 op);
 #endif
 

ndb/src/ndbapi/Ndb.cpp

@@ -714,9 +714,10 @@ Ndb::getNodeId()
 }
 
 /****************************************************************************
-Uint64 getTupleIdFromNdb( Uint32 aTableId );
+Uint64 getTupleIdFromNdb( Uint32 aTableId, Uint32 cacheSize );
 
 Parameters:     aTableId : The TableId.
+                cacheSize: Prefetch this many values
 Remark:		Returns a new TupleId to the application.
                 The TupleId comes from SYSTAB_0 where SYSKEY_0 = TableId.
                 It is initialized to (TableId << 48) + 1 in NdbcntrMain.cpp.
@@ -736,7 +737,7 @@ Ndb::getAutoIncrementValue(const char* aTableName, Uint32 cacheSize)
 }
 
 Uint64 
-Ndb::getTupleIdFromNdb(const char* aTableName, Uint32 cacheSize )
+Ndb::getTupleIdFromNdb(const char* aTableName, Uint32 cacheSize)
 {
   const NdbTableImpl* table = theDictionary->getTable(aTableName);
   if (table == 0)
@@ -745,7 +746,7 @@ Ndb::getTupleIdFromNdb(const char* aTableName, Uint32 cacheSize )
 }
 
 Uint64
-Ndb::getTupleIdFromNdb(Uint32 aTableId, Uint32 cacheSize )
+Ndb::getTupleIdFromNdb(Uint32 aTableId, Uint32 cacheSize)
 {
   if ( theFirstTupleId[aTableId] != theLastTupleId[aTableId] )
   {
@@ -758,6 +759,27 @@ Ndb::getTupleIdFromNdb(Uint32 aTableId, Uint32 cacheSize )
   }
 }
 
+Uint64
+Ndb::readAutoIncrementValue(const char* aTableName)
+{
+  DEBUG_TRACE("readtAutoIncrementValue");
+  const NdbTableImpl* table = theDictionary->getTable(aTableName);
+  if (table == 0)
+    return ~0;
+  Uint64 tupleId = readTupleIdFromNdb(table->m_tableId);
+  return tupleId;
+}
+
+Uint64
+Ndb::readTupleIdFromNdb(Uint32 aTableId)
+{
+  if ( theFirstTupleId[aTableId] == theLastTupleId[aTableId] )
+    // Cache is empty, check next in database
+    return opTupleIdOnNdb(aTableId, 0, 3);
+
+  return theFirstTupleId[aTableId] + 1;
+}
+
 bool
 Ndb::setAutoIncrementValue(const char* aTableName, Uint64 val, bool increase)
 {
@@ -891,6 +913,14 @@ Ndb::opTupleIdOnNdb(Uint32 aTableId, Uint64 opValue, Uint32 op)
 	ret = opValue;
       }
       break;
+    case 3:
+      tOperation->readTuple();
+      tOperation->equal("SYSKEY_0", aTableId );
+      tRecAttrResult = tOperation->getValue("NEXTID");
+      if (tConnection->execute( Commit ) == -1 )
+        goto error_handler;
+      ret = tRecAttrResult->u_64_value();
+      break;
     default:
       goto error_handler;
     }

sql/ha_ndbcluster.cc

@@ -1281,7 +1281,7 @@ int ha_ndbcluster::define_read_attrs(byte* buf, NdbOperation* op)
 
 int ha_ndbcluster::write_row(byte *record)
 {
-  bool has_auto_increment, auto_increment_field_not_null;
+  bool has_auto_increment;
   uint i;
   NdbConnection *trans= m_active_trans;
   NdbOperation *op;
@@ -1292,8 +1292,8 @@ int ha_ndbcluster::write_row(byte *record)
   if (table->timestamp_default_now)
     update_timestamp(record+table->timestamp_default_now-1);
   has_auto_increment= (table->next_number_field && record == table->record[0]);
-  auto_increment_field_not_null= table->auto_increment_field_not_null;
+  skip_auto_increment= table->auto_increment_field_not_null;
-  if ((has_auto_increment) && (!auto_increment_field_not_null))
+  if ((has_auto_increment) && (!skip_auto_increment))
     update_auto_increment();
 
   if (!(op= trans->getNdbOperation(m_tabname)))
@@ -1347,7 +1347,7 @@ int ha_ndbcluster::write_row(byte *record)
     if (trans->execute(NoCommit) != 0)
       DBUG_RETURN(ndb_err(trans));
   }
-  if ((has_auto_increment) && (auto_increment_field_not_null))
+  if ((has_auto_increment) && (skip_auto_increment))
   {
     Uint64 next_val= (Uint64) table->next_number_field->val_int() + 1;
     DBUG_PRINT("info", 
@@ -1356,6 +1356,7 @@ int ha_ndbcluster::write_row(byte *record)
       DBUG_PRINT("info", 
 		 ("Setting next auto increment value to %u", next_val));  
   }
+  skip_auto_increment= true;
 
   DBUG_RETURN(0);
 }
@@ -3049,7 +3050,9 @@ longlong ha_ndbcluster::get_auto_increment()
     rows_to_insert 
     : autoincrement_prefetch;
   Uint64 auto_value= 
-    m_ndb->getAutoIncrementValue(m_tabname, cache_size);
+    (skip_auto_increment) ? 
+    m_ndb->readAutoIncrementValue(m_tabname)
+    : m_ndb->getAutoIncrementValue(m_tabname, cache_size);
   DBUG_RETURN((longlong)auto_value);
 }
 
@@ -3074,6 +3077,7 @@ ha_ndbcluster::ha_ndbcluster(TABLE *table_arg):
   bulk_insert_rows(1024),
   bulk_insert_not_flushed(false),
   ops_pending(0),
+  skip_auto_increment(true),
   blobs_buffer(0),
   blobs_buffer_size(0)
 { 

sql/ha_ndbcluster.h

@@ -223,6 +223,7 @@ class ha_ndbcluster: public handler
   ha_rows bulk_insert_rows;
   bool bulk_insert_not_flushed;
   ha_rows ops_pending;
+  bool skip_auto_increment;
   bool blobs_pending;
   // memory for blobs in one tuple
   char *blobs_buffer;