Bug #28410 ndb: no retry sleep when getting autoincrement

- add retry sleep to allow temprary error to go away

sql/ha_ndbcluster.cc

@@ -2309,16 +2309,24 @@ int ha_ndbcluster::write_row(byte *record)
   {
     // Table has hidden primary key
     Ndb *ndb= get_ndb();
-    int ret;
     Uint64 auto_value;
     uint retries= NDB_AUTO_INCREMENT_RETRIES;
-    do {
-      ret= ndb->getAutoIncrementValue((const NDBTAB *) m_table, auto_value, 1);
-    } while (ret == -1 && 
-             --retries &&
+    int retry_sleep= 30; /* 30 milliseconds, transaction */
+    for (;;)
+    {
+      if (ndb->getAutoIncrementValue((const NDBTAB *) m_table,
+                                     auto_value, 1) == -1)
+      {
+        if (--retries &&
             ndb->getNdbError().status == NdbError::TemporaryError);
-    if (ret == -1)
+        {
+          my_sleep(retry_sleep);
+          continue;
+        }
         ERR_RETURN(ndb->getNdbError());
+      }
+      break;
+    }
     if (set_hidden_key(op, table->s->fields, (const byte*)&auto_value))
       ERR_RETURN(op->getNdbError());
   } 
@@ -4855,23 +4863,28 @@ ulonglong ha_ndbcluster::get_auto_increment()
            m_rows_to_insert - m_rows_inserted :
            ((m_rows_to_insert > m_autoincrement_prefetch) ?
             m_rows_to_insert : m_autoincrement_prefetch));
-  int ret;
   uint retries= NDB_AUTO_INCREMENT_RETRIES;
-  do {
-    ret=
-      m_skip_auto_increment ? 
-      ndb->readAutoIncrementValue((const NDBTAB *) m_table, auto_value) :
-      ndb->getAutoIncrementValue((const NDBTAB *) m_table, auto_value, cache_size);
-  } while (ret == -1 && 
-           --retries &&
+  int retry_sleep= 30; /* 30 milliseconds, transaction */
+  for (;;)
+  {
+    if (m_skip_auto_increment &&
+        ndb->readAutoIncrementValue((const NDBTAB *) m_table, auto_value) ||
+        ndb->getAutoIncrementValue((const NDBTAB *) m_table,
+                                   auto_value, cache_size))
+    {
+      if (--retries &&
           ndb->getNdbError().status == NdbError::TemporaryError);
-  if (ret == -1)
       {
+        my_sleep(retry_sleep);
+        continue;
+      }
       const NdbError err= ndb->getNdbError();
       sql_print_error("Error %lu in ::get_auto_increment(): %s",
                       (ulong) err.code, err.message);
       DBUG_RETURN(~(ulonglong) 0);
     }
+    break;
+  }
   DBUG_RETURN((longlong)auto_value);
 }