Bug#25817 UPDATE IGNORE doesn't check write_set when checking unique indexes: Added checks

mysql-test/r/ndb_update.result

@@ -39,4 +39,12 @@ pk1	b	c
 10	0	0
 12	2	2
 14	1	1
+create unique index ib on t1(b);
+update t1 set c = 4 where pk1 = 12;
+update ignore t1 set b = 55 where pk1 = 14;
+select * from t1 order by pk1;
+pk1	b	c
+10	0	0
+12	2	4
+14	55	1
 DROP TABLE IF EXISTS t1;

mysql-test/t/ndb_update.test

@@ -33,6 +33,11 @@ UPDATE IGNORE t1 set pk1 = 1, c = 2 where pk1 = 4;
 select * from t1 order by pk1;
 UPDATE t1 set pk1 = pk1 + 10;
 select * from t1 order by pk1;
+# bug#25817
+create unique index ib on t1(b);
+update t1 set c = 4 where pk1 = 12;
+update ignore t1 set b = 55 where pk1 = 14;
+select * from t1 order by pk1;
 
 --disable_warnings
 DROP TABLE IF EXISTS t1;

sql/ha_ndbcluster.cc

@@ -1356,6 +1356,30 @@ int ha_ndbcluster::set_primary_key_from_record(NdbOperation *op, const byte *rec
   DBUG_RETURN(0);
 }
 
+bool ha_ndbcluster::check_index_fields_in_write_set(uint keyno)
+{
+  KEY* key_info= table->key_info + keyno;
+  KEY_PART_INFO* key_part= key_info->key_part;
+  KEY_PART_INFO* end= key_part+key_info->key_parts;
+  uint i;
+  DBUG_ENTER("check_index_fields_in_write_set");
+
+  if (m_retrieve_all_fields)
+  {
+    DBUG_RETURN(true);
+  }
+  for (i= 0; key_part != end; key_part++, i++)
+  {
+    Field* field= key_part->field;
+    if (field->query_id != current_thd->query_id)
+    {
+      DBUG_RETURN(false);
+    }
+  }
+
+  DBUG_RETURN(true);
+}
+
 int ha_ndbcluster::set_index_key_from_record(NdbOperation *op, const byte *record, uint keyno)
 {
   KEY* key_info= table->key_info + keyno;
@@ -1643,7 +1667,8 @@ check_null_in_record(const KEY* key_info, const byte *record)
  * primary key or unique index values
 */
 
-int ha_ndbcluster::peek_indexed_rows(const byte *record, bool check_pk)
+int ha_ndbcluster::peek_indexed_rows(const byte *record, 
+                                     NDB_WRITE_OP write_op)
 {
   NdbTransaction *trans= m_active_trans;
   NdbOperation *op;
@@ -1656,7 +1681,7 @@ int ha_ndbcluster::peek_indexed_rows(const byte *record, bool check_pk)
     (NdbOperation::LockMode)get_ndb_lock_type(m_lock.type);
   
   first= NULL;
-  if (check_pk && table->s->primary_key != MAX_KEY)
+  if (write_op != NDB_UPDATE && table->s->primary_key != MAX_KEY)
   {
     /*
      * Fetch any row with colliding primary key
@@ -1690,6 +1715,12 @@ int ha_ndbcluster::peek_indexed_rows(const byte *record, bool check_pk)
 	DBUG_PRINT("info", ("skipping check for key with NULL"));
         continue;
       } 
+      if (write_op != NDB_INSERT && !check_index_fields_in_write_set(i))
+      {
+	DBUG_PRINT("info", ("skipping check for key %u not in write_set", i));
+        continue;
+      }
+
       NdbIndexOperation *iop;
       NDBINDEX *unique_index = (NDBINDEX *) m_index[i].unique_index;
       key_part= key_info->key_part;
@@ -2268,7 +2299,7 @@ int ha_ndbcluster::write_row(byte *record)
       start_bulk_insert will set parameters to ensure that each
       write_row is committed individually
     */
-    int peek_res= peek_indexed_rows(record, true);
+    int peek_res= peek_indexed_rows(record, NDB_INSERT);
     
     if (!peek_res) 
     {
@@ -2456,7 +2487,8 @@ int ha_ndbcluster::update_row(const byte *old_data, byte *new_data)
   if (m_ignore_dup_key && (thd->lex->sql_command == SQLCOM_UPDATE ||
                            thd->lex->sql_command == SQLCOM_UPDATE_MULTI))
   {
-    int peek_res= peek_indexed_rows(new_data, pk_update);
+    NDB_WRITE_OP write_op= (pk_update) ? NDB_PK_UPDATE : NDB_UPDATE;
+    int peek_res= peek_indexed_rows(new_data, write_op);
     
     if (!peek_res) 
     {

sql/ha_ndbcluster.h

@@ -59,6 +59,12 @@ typedef struct ndb_index_data {
   bool null_in_unique_index;
 } NDB_INDEX_DATA;
 
+typedef enum ndb_write_op {
+  NDB_INSERT = 0,
+  NDB_UPDATE = 1,
+  NDB_PK_UPDATE = 2
+} NDB_WRITE_OP;
+
 typedef struct st_ndbcluster_share {
   THR_LOCK lock;
   pthread_mutex_t mutex;
@@ -251,7 +257,7 @@ private:
                                       const NdbOperation *first,
                                       const NdbOperation *last,
                                       uint errcode);
-  int peek_indexed_rows(const byte *record, bool check_pk);
+  int peek_indexed_rows(const byte *record, NDB_WRITE_OP write_op);
   int unique_index_read(const byte *key, uint key_len, 
                         byte *buf);
   int ordered_index_scan(const key_range *start_key,
@@ -286,6 +292,7 @@ private:
   int get_ndb_blobs_value(NdbBlob *last_ndb_blob, my_ptrdiff_t ptrdiff);
   int set_primary_key(NdbOperation *op, const byte *key);
   int set_primary_key_from_record(NdbOperation *op, const byte *record);
+  bool check_index_fields_in_write_set(uint keyno);
   int set_index_key_from_record(NdbOperation *op, const byte *record,
                                 uint keyno);
   int set_bounds(NdbIndexScanOperation*, const key_range *keys[2], uint= 0);