Merge branch '5.5-galera' into 10.0-galera

debian/mariadb-galera-server-10.0.mysql.init

@@ -17,6 +17,9 @@ set -e
 set -u
 ${DEBIAN_SCRIPT_DEBUG:+ set -v -x}
 
+# Prevent Debian's init scripts from calling systemctl
+_SYSTEMCTL_SKIP_REDIRECT=true
+
 test -x /usr/sbin/mysqld || exit 0
 
 . /lib/lsb/init-functions
@@ -179,8 +182,15 @@ case "${1:-''}" in
 	fi
   	;;
 
+  'bootstrap')
+	# Bootstrap the cluster, start the first node
+	# that initiates the cluster
+	log_daemon_msg "Bootstrapping the cluster" "mysqld"
+	$SELF start "${@:2}" --wsrep-new-cluster
+	;;
+
   *)
-	echo "Usage: $SELF start|stop|restart|reload|force-reload|status"
+	echo "Usage: $SELF start|stop|restart|reload|force-reload|status|bootstrap"
 	exit 1
 	;;
 esac

mysql-test/suite/galera/r/galera_read_only.result

@@ -4,5 +4,15 @@ INSERT INTO t1 VALUES (1);
 SELECT COUNT(*) = 1 FROM t1;
 COUNT(*) = 1
 1
+CREATE USER foo@localhost;
+# Open connection to node 2 using 'foo' user.
+
+# Connect with foo_node_2
+INSERT INTO t1 VALUES (2);
+ERROR HY000: The MariaDB server is running with the --read-only option so it cannot execute this statement
+SELECT COUNT(*) = 1 FROM t1;
+COUNT(*) = 1
+1
 SET GLOBAL read_only=FALSE;
 DROP TABLE t1;
+DROP USER foo@localhost;

mysql-test/suite/galera/t/galera_read_only.test

@@ -17,7 +17,23 @@ INSERT INTO t1 VALUES (1);
 --connection node_2
 SELECT COUNT(*) = 1 FROM t1;
 
-SET GLOBAL read_only=FALSE;
+CREATE USER foo@localhost;
+
+--echo # Open connection to node 2 using 'foo' user.
+--let $port_2= \$NODE_MYPORT_2
+--connect(foo_node_2,127.0.0.1,foo,,test,$port_2,)
 
+--echo
+--echo # Connect with foo_node_2
+--connection foo_node_2
+--error ER_OPTION_PREVENTS_STATEMENT
+INSERT INTO t1 VALUES (2);
+
+--connection node_2
+SELECT COUNT(*) = 1 FROM t1;
+
+# Cleanup
+SET GLOBAL read_only=FALSE;
 DROP TABLE t1;
+DROP USER foo@localhost;
 

mysys/my_alloc.c

@@ -104,6 +104,7 @@ void init_alloc_root(MEM_ROOT *mem_root, size_t block_size,
 void reset_root_defaults(MEM_ROOT *mem_root, size_t block_size,
                          size_t pre_alloc_size __attribute__((unused)))
 {
+  DBUG_ENTER("reset_root_defaults");
   DBUG_ASSERT(alloc_root_inited(mem_root));
 
   mem_root->block_size= (((block_size - ALLOC_ROOT_MIN_BLOCK_SIZE) & ~1) |
@@ -126,7 +127,7 @@ void reset_root_defaults(MEM_ROOT *mem_root, size_t block_size,
         {
           /* We found a suitable block, no need to do anything else */
           mem_root->pre_alloc= mem;
-          return;
+          DBUG_VOID_RETURN;
         }
         if (mem->left + ALIGN_SIZE(sizeof(USED_MEM)) == mem->size)
         {
@@ -156,6 +157,8 @@ void reset_root_defaults(MEM_ROOT *mem_root, size_t block_size,
   else
 #endif
     mem_root->pre_alloc= 0;
+
+  DBUG_VOID_RETURN;
 }
 
 

sql/mysqld.cc

@@ -5104,6 +5104,39 @@ static int init_server_components()
   }
   plugins_are_initialized= TRUE;  /* Don't separate from init function */
 
+#ifdef WITH_WSREP
+  /* Wait for wsrep threads to get created. */
+  if (wsrep_creating_startup_threads == 1) {
+    mysql_mutex_lock(&LOCK_thread_count);
+    while (wsrep_running_threads < 2)
+    {
+      mysql_cond_wait(&COND_thread_count, &LOCK_thread_count);
+    }
+
+    /* Now is the time to initialize threads for queries. */
+    THD *tmp;
+    I_List_iterator<THD> it(threads);
+    while ((tmp= it++))
+    {
+      if (tmp->wsrep_applier == true)
+      {
+        /*
+          Set THR_THD to temporally point to this THD to register all the
+          variables that allocates memory for this THD.
+        */
+        THD *current_thd_saved= current_thd;
+        set_current_thd(tmp);
+
+        tmp->init_for_queries();
+
+        /* Restore current_thd. */
+        set_current_thd(current_thd_saved);
+      }
+    }
+    mysql_mutex_unlock(&LOCK_thread_count);
+  }
+#endif
+
   /* we do want to exit if there are any other unknown options */
   if (remaining_argc > 1)
   {
@@ -5340,16 +5373,11 @@ pthread_handler_t start_wsrep_THD(void *arg)
   THD *thd;
   wsrep_thd_processor_fun processor= (wsrep_thd_processor_fun)arg;
 
-  if (my_thread_init())
+  if (my_thread_init() || (!(thd= new THD(true))))
   {
-    WSREP_ERROR("Could not initialize thread");
-    return(NULL);
+    goto error;
   }
 
-  if (!(thd= new THD(true)))
-  {
-    return(NULL);
-  }
   mysql_mutex_lock(&LOCK_thread_count);
   thd->thread_id=thread_id++;
 
@@ -5374,13 +5402,13 @@ pthread_handler_t start_wsrep_THD(void *arg)
 
   mysql_thread_set_psi_id(thd->thread_id);
   thd->thr_create_utime=  microsecond_interval_timer();
+
   if (MYSQL_CALLBACK_ELSE(thread_scheduler, init_new_connection_thread, (), 0))
   {
     close_connection(thd, ER_OUT_OF_RESOURCES);
     statistic_increment(aborted_connects,&LOCK_status);
     MYSQL_CALLBACK(thread_scheduler, end_thread, (thd, 0));
-
-    return(NULL);
+    goto error;
   }
 
 // </5.1.17>
@@ -5403,8 +5431,7 @@ pthread_handler_t start_wsrep_THD(void *arg)
     statistic_increment(aborted_connects,&LOCK_status);
     MYSQL_CALLBACK(thread_scheduler, end_thread, (thd, 0));
     delete thd;
-
-    return(NULL);
+    goto error;
   }
 
   thd->system_thread= SYSTEM_THREAD_SLAVE_SQL;
@@ -5414,12 +5441,21 @@ pthread_handler_t start_wsrep_THD(void *arg)
   //thd->version= refresh_version;
   thd->proc_info= 0;
   thd->set_command(COM_SLEEP);
-  thd->set_time();
+
+  if (wsrep_creating_startup_threads == 0)
+  {
     thd->init_for_queries();
+  }
 
   mysql_mutex_lock(&LOCK_thread_count);
   wsrep_running_threads++;
   mysql_cond_broadcast(&COND_thread_count);
+
+  if (wsrep_running_threads > 2)
+  {
+    wsrep_creating_startup_threads= 0;
+  }
+
   mysql_mutex_unlock(&LOCK_thread_count);
 
   processor(thd);
@@ -5457,6 +5493,15 @@ pthread_handler_t start_wsrep_THD(void *arg)
     mysql_mutex_unlock(&LOCK_thread_count);
   }
   return(NULL);
+
+error:
+  WSREP_ERROR("Failed to create/initialize system thread");
+
+  /* Abort if its the first applier/rollbacker thread. */
+  if (wsrep_creating_startup_threads < 2)
+    unireg_abort(1);
+  else
+    return NULL;
 }
 
 /**/

sql/sql_parse.cc

@@ -1199,22 +1199,6 @@ static my_bool deny_updates_if_read_only_option(THD *thd,
 }
 
 #ifdef WITH_WSREP
-static my_bool wsrep_read_only_option(THD *thd, TABLE_LIST *all_tables)
-{
-  int opt_readonly_saved = opt_readonly;
-  ulong flag_saved = (ulong)(thd->security_ctx->master_access & SUPER_ACL);
-
-  opt_readonly = 0;
-  thd->security_ctx->master_access &= ~SUPER_ACL;
-
-  my_bool ret = !deny_updates_if_read_only_option(thd, all_tables);
-
-  opt_readonly = opt_readonly_saved;
-  thd->security_ctx->master_access |= flag_saved;
-
-  return ret;
-}
-
 static void wsrep_copy_query(THD *thd)
 {
   thd->wsrep_retry_command   = thd->get_command();
@@ -1228,6 +1212,7 @@ static void wsrep_copy_query(THD *thd)
   thd->wsrep_retry_query[thd->wsrep_retry_query_len] = '\0';
 }
 #endif /* WITH_WSREP */
+
 /**
   Perform one connection-level (COM_XXXX) command.
 
@@ -6989,8 +6974,7 @@ static void wsrep_mysql_parse(THD *thd, char *rawbuf, uint length,
   bool is_autocommit=
     !thd->in_multi_stmt_transaction_mode()                  &&
     thd->wsrep_conflict_state == NO_CONFLICT                &&
-    !thd->wsrep_applier                                     &&
-    wsrep_read_only_option(thd, thd->lex->query_tables);
+    !thd->wsrep_applier;
 
   do
   {

sql/wsrep_mysqld.cc

@@ -71,6 +71,13 @@ my_bool wsrep_restart_slave_activated  = 0; // node has dropped, and slave
                                             // restart will be needed
 my_bool wsrep_slave_UK_checks          = 0; // slave thread does UK checks
 my_bool wsrep_slave_FK_checks          = 0; // slave thread does FK checks
+
+/*
+  Set during the creation of first wsrep applier and rollback threads.
+  Since these threads are critical, abort if the thread creation fails.
+*/
+my_bool wsrep_creating_startup_threads = 0;
+
 /*
  * End configuration options
  */
@@ -671,6 +678,7 @@ void wsrep_init_startup (bool first)
 
   if (!wsrep_start_replication()) unireg_abort(1);
 
+  wsrep_creating_startup_threads= 1;
   wsrep_create_rollbacker();
   wsrep_create_appliers(1);
 

sql/wsrep_mysqld.h

@@ -107,6 +107,7 @@ extern my_bool     wsrep_restart_slave_activated;
 extern my_bool     wsrep_slave_FK_checks;
 extern my_bool     wsrep_slave_UK_checks;
 extern bool        wsrep_new_cluster;           // bootstrap the cluster ?
+extern my_bool     wsrep_creating_startup_threads;
 
 enum enum_wsrep_OSU_method {
     WSREP_OSU_TOI,

support-files/mysql.server.sh

@@ -25,6 +25,14 @@
 # Description: MySQL is a very fast and reliable SQL database engine.
 ### END INIT INFO
 
+# Prevent OpenSUSE's init scripts from calling systemd, so that
+# both 'bootstrap' and 'start' are handled entirely within this
+# script
+SYSTEMD_NO_WRAP=1
+
+# Prevent Debian's init scripts from calling systemctl
+_SYSTEMCTL_SKIP_REDIRECT=true
+ 
 # If you install MySQL on some other places than @prefix@, then you
 # have to do one of the following things for this script to work:
 #