#3213 fix the store_lock function (pattern after innodb's storage_lock function) refs[t:3213]

git-svn-id: file:///svn/mysql/tokudb-engine/tokudb-engine@27607 c7de825b-a66e-492c-adef-691d508d4ae1

storage/tokudb/ha_tokudb.cc

@@ -5561,25 +5561,25 @@ THR_LOCK_DATA **ha_tokudb::store_lock(THD * thd, THR_LOCK_DATA ** to, enum thr_l
     if (tokudb_debug & TOKUDB_DEBUG_LOCK) {
         TOKUDB_TRACE("%s lock_type=%d cmd=%d\n", __FUNCTION__, lock_type, thd_sql_command(thd));
     }
-    if (get_create_index_online(thd) && 
-        thd_sql_command(thd)== SQLCOM_CREATE_INDEX
-        ) 
-    {
+
+    if (lock_type != TL_IGNORE && lock.type == TL_UNLOCK) {
+        // if creating a hot index
+        if (get_create_index_online(thd) && thd_sql_command(thd)== SQLCOM_CREATE_INDEX) {
             rw_rdlock(&share->num_DBs_lock);
             if (share->num_DBs == (table->s->keys + test(hidden_primary_key))) {
                 lock_type = TL_WRITE_ALLOW_WRITE;
             }
             lock.type = lock_type;
             rw_unlock(&share->num_DBs_lock);
-    }
-    else if (lock_type != TL_IGNORE && lock.type == TL_UNLOCK) {
-        /* If we are not doing a LOCK TABLE, then allow multiple writers */
+        } else {
+            // If we are not doing a LOCK TABLE, then allow multiple writers
             if ((lock_type >= TL_WRITE_CONCURRENT_INSERT && lock_type <= TL_WRITE) && 
                 !thd->in_lock_tables && thd_sql_command(thd) != SQLCOM_TRUNCATE && !thd_tablespace_op(thd)) {
                 lock_type = TL_WRITE_ALLOW_WRITE;
             }
             lock.type = lock_type;
         }
+    }
     *to++ = &lock;
     if (tokudb_debug & TOKUDB_DEBUG_LOCK)
         TOKUDB_TRACE("%s lock_type=%d\n", __FUNCTION__, lock_type);