DictCache.hpp, Ndb.hpp:

  Add new variable m_highest_seen when only peeking at auto_increment NEXTID and not retrieving to cache. Add new method to check tupleId before calling data node
ndb_restore.result, ndb_restore.test:
  Changed test to use information_schema to check auto_increment
DictCache.cpp, Ndb.cpp:
  Add new variable m_highest_seen when only peeking at auto_increment NEXTID and not retrieving to cache. Add new method to check tupleId before calling data node. When setting the auto_increment value we'll also read up the new value, this is useful if we use the table the first time in this MySQL Server and haven't yet seen the NEXTID value. The kernel will avoid updating since it already has the value but will also read up the NEXTID value to ensure we don't need to do this any more time.
ndb_auto_increment.result:
  Updated result file since it was incorrect

mysql-test/r/ndb_auto_increment.result

@@ -421,10 +421,10 @@ select * from t1 order by a;
 a
 1
 20
-21
 33
 34
 35
+65
 insert into t1 values (100);
 insert into t1 values (NULL);
 insert into t1 values (NULL);
@@ -432,11 +432,11 @@ select * from t1 order by a;
 a
 1
 20
-21
-22
 33
 34
 35
+65
+66
 100
 101
 set auto_increment_offset = @old_auto_increment_offset;

mysql-test/r/ndb_restore.result

@@ -266,21 +266,41 @@ a
 2000
 3000
 10000
-show table status like 't1_c';
-Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
-X	X	X	X	X	X	X	X	X	X	3001	X	X	X	X	X	X	X
-show table status like 't2_c';
-Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
-X	X	X	X	X	X	X	X	X	X	501	X	X	X	X	X	X	X
-show table status like 't4_c';
-Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
-X	X	X	X	X	X	X	X	X	X	290000001	X	X	X	X	X	X	X
-show table status like 't7_c';
-Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
-X	X	X	X	X	X	X	X	X	X	29	X	X	X	X	X	X	X
-show table status like 't10_c';
-Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
-X	X	X	X	X	X	X	X	X	X	10001	X	X	X	X	X	X	X
+select max(capgoaledatta) from t1_c;
+max(capgoaledatta)
+3000
+select auto_increment from information_schema.tables
+where table_name = 't1_c';
+auto_increment
+3001
+select max(capgotod) from t2_c;
+max(capgotod)
+500
+select auto_increment from information_schema.tables
+where table_name = 't2_c';
+auto_increment
+501
+select max(capfa) from t4_c;
+max(capfa)
+290000000
+select auto_increment from information_schema.tables
+where table_name = 't4_c';
+auto_increment
+290000001
+select max(dardtestard) from t7_c;
+max(dardtestard)
+28
+select auto_increment from information_schema.tables
+where table_name = 't7_c';
+auto_increment
+29
+select max(a) from t10_c;
+max(a)
+10000
+select auto_increment from information_schema.tables
+where table_name = 't10_c';
+auto_increment
+10001
 drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9, t10;
 drop table if exists t1_c,t2_c,t3_c,t4_c,t5_c,t6_c,t7_c,t8_c,t9_c, t10_c;
 520093696,<the_backup_id>

mysql-test/t/ndb_restore.test

@@ -231,16 +231,21 @@ select count(*)
 select * from t10_c order by a;
 # Bug #27775 cont'd
 # - auto inc info should be correct
---replace_column 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 9 X 10 X 12 X 13 X 14 X 15 X 16 X 17 X 18 X
-show table status like 't1_c';
---replace_column 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 9 X 10 X 12 X 13 X 14 X 15 X 16 X 17 X 18 X
-show table status like 't2_c';
---replace_column 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 9 X 10 X 12 X 13 X 14 X 15 X 16 X 17 X 18 X
-show table status like 't4_c';
---replace_column 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 9 X 10 X 12 X 13 X 14 X 15 X 16 X 17 X 18 X
-show table status like 't7_c';
---replace_column 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 X 9 X 10 X 12 X 13 X 14 X 15 X 16 X 17 X 18 X
-show table status like 't10_c';
+select max(capgoaledatta) from t1_c;
+select auto_increment from information_schema.tables
+where table_name = 't1_c';
+select max(capgotod) from t2_c;
+select auto_increment from information_schema.tables
+where table_name = 't2_c';
+select max(capfa) from t4_c;
+select auto_increment from information_schema.tables
+where table_name = 't4_c';
+select max(dardtestard) from t7_c;
+select auto_increment from information_schema.tables
+where table_name = 't7_c';
+select max(a) from t10_c;
+select auto_increment from information_schema.tables
+where table_name = 't10_c';
 
 --disable_warnings
 drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9, t10;

ndb/include/ndbapi/Ndb.hpp

@@ -1399,9 +1399,9 @@ public:
   int readAutoIncrementValue(const NdbDictionary::Table * aTable,
                              Uint64 & tupleId);
   int setAutoIncrementValue(const char* aTableName,
-                            Uint64 tupleId, bool increase);
+                            Uint64 tupleId, bool modify);
   int setAutoIncrementValue(const NdbDictionary::Table * aTable,
-                            Uint64 tupleId, bool increase);
+                            Uint64 tupleId, bool modify);
 private:
   int getTupleIdFromNdb(Ndb_local_table_info* info,
                         Uint64 & tupleId, Uint32 cacheSize,
@@ -1409,7 +1409,9 @@ private:
   int readTupleIdFromNdb(Ndb_local_table_info* info,
                          Uint64 & tupleId);
   int setTupleIdInNdb(Ndb_local_table_info* info,
-                      Uint64 tupleId, bool increase);
+                      Uint64 tupleId, bool modify);
+  int checkTupleIdInNdb(Ndb_local_table_info* info,
+                         Uint64 tupleId);
   int opTupleIdOnNdb(Ndb_local_table_info* info, Uint64 & opValue, Uint32 op);
 public:
 

ndb/src/ndbapi/DictCache.cpp

@@ -46,6 +46,7 @@ Ndb_local_table_info::Ndb_local_table_info(NdbTableImpl *table_impl)
   m_table_impl= table_impl;
   m_first_tuple_id = ~(Uint64)0;
   m_last_tuple_id = ~(Uint64)0;
+  m_highest_seen = 0;
 }
 
 Ndb_local_table_info::~Ndb_local_table_info()

ndb/src/ndbapi/DictCache.hpp

@@ -36,6 +36,7 @@ public:
   // range of cached tuple ids per thread
   Uint64 m_first_tuple_id;
   Uint64 m_last_tuple_id;
+  Uint64 m_highest_seen;
 
   Uint64 m_local_data[1]; // Must be last member. Used to access extra space.
 private:

ndb/src/ndbapi/Ndb.cpp

@@ -767,7 +767,7 @@ Ndb::getNodeId()
 }
 
 /****************************************************************************
-Uint64 getAutoIncrementValue( const char* aTableName,
+int    getAutoIncrementValue( const char* aTableName,
                               Uint64 & tupleId, 
                               Uint32 cacheSize, 
                               Uint64 step,
@@ -779,6 +779,7 @@ Parameters:     aTableName (IN) : The table name.
                 step       (IN) : Specifies the step between the 
                                   autoincrement values.
                 start      (IN) : Start value for first value
+Returns:        0 if succesful, -1 if error encountered
 Remark:		Returns a new autoincrement value to the application.
                 The autoincrement values can be increased by steps
                 (default 1) and a number of values can be prefetched
@@ -892,9 +893,20 @@ Ndb::getTupleIdFromNdb(Ndb_local_table_info* info,
   DBUG_RETURN(0);
 }
 
+/****************************************************************************
+int readAutoIncrementValue( const char* aTableName,
+                            Uint64 & autoValue,
+                            bool modify);
+
+Parameters:     aTableName (IN) : The table name.
+                autoValue  (OUT) : The current autoincrement value
+                modify     (IN) : Modify existing value (not initialization)
+Returns:        0 if succesful, -1 if error encountered
+Remark:		Returns the current autoincrement value to the application.
+****************************************************************************/
 int
 Ndb::readAutoIncrementValue(const char* aTableName,
-                            Uint64 & tupleId)
+                            Uint64 & autoValue)
 {
   DBUG_ENTER("Ndb::readAutoIncrementValue");
   BaseString internal_tabname(internalize_table_name(aTableName));
@@ -905,15 +917,15 @@ Ndb::readAutoIncrementValue(const char* aTableName,
     theError.code = theDictionary->getNdbError().code;
     DBUG_RETURN(-1);
   }
-  if (readTupleIdFromNdb(info, tupleId) == -1)
+  if (readTupleIdFromNdb(info, autoValue) == -1)
     DBUG_RETURN(-1);
-  DBUG_PRINT("info", ("value %lu", (ulong)tupleId));
+  DBUG_PRINT("info", ("value %lu", (ulong)autoValue));
   DBUG_RETURN(0);
 }
 
 int
 Ndb::readAutoIncrementValue(const NdbDictionary::Table * aTable,
-                            Uint64 & tupleId)
+                            Uint64 & autoValue)
 {
   DBUG_ENTER("Ndb::readAutoIncrementValue");
   assert(aTable != 0);
@@ -926,9 +938,9 @@ Ndb::readAutoIncrementValue(const NdbDictionary::Table * aTable,
     theError.code = theDictionary->getNdbError().code;
     DBUG_RETURN(-1);
   }
-  if (readTupleIdFromNdb(info, tupleId) == -1)
+  if (readTupleIdFromNdb(info, autoValue) == -1)
     DBUG_RETURN(-1);
-  DBUG_PRINT("info", ("value %lu", (ulong)tupleId));
+  DBUG_PRINT("info", ("value %lu", (ulong)autoValue));
   DBUG_RETURN(0);
 }
 
@@ -956,9 +968,20 @@ Ndb::readTupleIdFromNdb(Ndb_local_table_info* info,
   DBUG_RETURN(0);
 }
 
+/****************************************************************************
+int setAutoIncrementValue( const char* aTableName,
+                           Uint64 autoValue,
+                           bool modify);
+
+Parameters:     aTableName (IN) : The table name.
+                autoValue  (IN) : The new autoincrement value
+                modify     (IN) : Modify existing value (not initialization)
+Returns:        0 if succesful, -1 if error encountered
+Remark:		Sets a new autoincrement value for the application.
+****************************************************************************/
 int
 Ndb::setAutoIncrementValue(const char* aTableName,
-                           Uint64 tupleId, bool increase)
+                           Uint64 autoValue, bool modify)
 {
   DBUG_ENTER("Ndb::setAutoIncrementValue");
   BaseString internal_tabname(internalize_table_name(aTableName));
@@ -969,14 +992,14 @@ Ndb::setAutoIncrementValue(const char* aTableName,
     theError.code = theDictionary->getNdbError().code;
     DBUG_RETURN(-1);
   }
-  if (setTupleIdInNdb(info, tupleId, increase) == -1)
+  if (setTupleIdInNdb(info, autoValue, modify) == -1)
     DBUG_RETURN(-1);
   DBUG_RETURN(0);
 }
 
 int
 Ndb::setAutoIncrementValue(const NdbDictionary::Table * aTable,
-                           Uint64 tupleId, bool increase)
+                           Uint64 autoValue, bool modify)
 {
   DBUG_ENTER("Ndb::setAutoIncrementValue");
   assert(aTable != 0);
@@ -989,38 +1012,42 @@ Ndb::setAutoIncrementValue(const NdbDictionary::Table * aTable,
     theError.code = theDictionary->getNdbError().code;
     DBUG_RETURN(-1);
   }
-  if (setTupleIdInNdb(info, tupleId, increase) == -1)
+  if (setTupleIdInNdb(info, autoValue, modify) == -1)
     DBUG_RETURN(-1);
   DBUG_RETURN(0);
 }
 
 int
 Ndb::setTupleIdInNdb(Ndb_local_table_info* info,
-                     Uint64 tupleId, bool increase)
+                     Uint64 tupleId, bool modify)
 {
   DBUG_ENTER("Ndb::setTupleIdInNdb");
-  if (increase)
+  if (modify)
   {
-    if (info->m_first_tuple_id != info->m_last_tuple_id)
+    if (checkTupleIdInNdb(info, tupleId))
     {
-      assert(info->m_first_tuple_id < info->m_last_tuple_id);
-      if (tupleId <= info->m_first_tuple_id + 1)
-	DBUG_RETURN(0);
-      if (tupleId <= info->m_last_tuple_id)
+      if (info->m_first_tuple_id != info->m_last_tuple_id)
       {
-	info->m_first_tuple_id = tupleId - 1;
-        DBUG_PRINT("info", 
-                   ("Setting next auto increment cached value to %lu",
-                    (ulong)tupleId));  
-	DBUG_RETURN(0);
+        assert(info->m_first_tuple_id < info->m_last_tuple_id);
+        if (tupleId <= info->m_first_tuple_id + 1)
+          DBUG_RETURN(0);
+        if (tupleId <= info->m_last_tuple_id)
+        {
+	  info->m_first_tuple_id = tupleId - 1;
+          DBUG_PRINT("info",
+                     ("Setting next auto increment cached value to %lu",
+                      (ulong)tupleId));
+	  DBUG_RETURN(0);
+        }
       }
+      /*
+       * if tupleId <= NEXTID, do nothing.  otherwise update NEXTID to
+       * tupleId and set cached range to first = last = tupleId - 1.
+       */
+      Uint64 opValue = tupleId;
+      if (opTupleIdOnNdb(info, opValue, 2) == -1)
+        DBUG_RETURN(-1);
     }
-    /*
-     * if tupleId <= NEXTID, do nothing.  otherwise update NEXTID to
-     * tupleId and set cached range to first = last = tupleId - 1.
-     */
-    if (opTupleIdOnNdb(info, tupleId, 2) == -1)
-      DBUG_RETURN(-1);
   }
   else
   {
@@ -1033,6 +1060,32 @@ Ndb::setTupleIdInNdb(Ndb_local_table_info* info,
   DBUG_RETURN(0);
 }
 
+int
+Ndb::checkTupleIdInNdb(Ndb_local_table_info* info, Uint64 tupleId)
+{
+  DBUG_ENTER("Ndb::checkTupleIdIndNdb");
+  if ((info->m_first_tuple_id != ~(Uint64)0) &&
+      (info->m_first_tuple_id > tupleId))
+  {
+   /*
+    * If we have ever cached a value in this object and this cached
+    * value is larger than the value we're trying to set then we
+    * need not check with the real value in the SYSTAB_0 table.
+    */
+    DBUG_RETURN(0);
+  }
+  if (info->m_highest_seen > tupleId)
+  {
+    /*
+     * Although we've never cached any higher value we have read
+     * a higher value and again it isn't necessary to change the
+     * auto increment value.
+     */
+    DBUG_RETURN(0);
+  }
+  DBUG_RETURN(1);
+}
+
 int
 Ndb::opTupleIdOnNdb(Ndb_local_table_info* info, Uint64 & opValue, Uint32 op)
 {
@@ -1094,6 +1147,7 @@ Ndb::opTupleIdOnNdb(Ndb_local_table_info* info, Uint64 & opValue, Uint32 op)
 
       info->m_first_tuple_id = ~(Uint64)0;
       info->m_last_tuple_id  = ~(Uint64)0;
+      info->m_highest_seen = 0;
       break;
     case 2:
       tOperation->interpretedUpdateTuple();
@@ -1103,19 +1157,18 @@ Ndb::opTupleIdOnNdb(Ndb_local_table_info* info, Uint64 & opValue, Uint32 op)
       // compare NEXTID >= opValue
       tOperation->branch_le(2, 1, 0);
       tOperation->write_attr("NEXTID", 1);
-      tOperation->interpret_exit_ok();
       tOperation->def_label(0);
-      tOperation->interpret_exit_nok(9999);
-      
+      tOperation->interpret_exit_ok();
+      tRecAttrResult = tOperation->getValue("NEXTID");
       if (tConnection->execute( Commit ) == -1)
       {
-        if (tConnection->theError.code != 9999)
-          goto error_handler;
+        goto error_handler;
       }
       else
       {
+	info->m_highest_seen = tRecAttrResult->u_64_value();
 	DBUG_PRINT("info", 
-		   ("Setting next auto increment value (db) to %lu",
+		   ("Setting auto increment value (db) to %lu",
 		    (ulong)opValue));  
         info->m_first_tuple_id = info->m_last_tuple_id = opValue - 1;
       }
@@ -1126,7 +1179,7 @@ Ndb::opTupleIdOnNdb(Ndb_local_table_info* info, Uint64 & opValue, Uint32 op)
       tRecAttrResult = tOperation->getValue("NEXTID");
       if (tConnection->execute( Commit ) == -1 )
         goto error_handler;
-      opValue = tRecAttrResult->u_64_value(); // out
+      info->m_highest_seen = opValue = tRecAttrResult->u_64_value(); // out
       break;
     default:
       goto error_handler;