MDEV-9544 FLUSH [RELAY] LOGS does not rotate logs for a named slave

Problem:- In the case of multisource replication/named slave
when we run "FLUSH LOGS" , it does not flush logs.

Solution:- A new function Master_info_index->flush_all_relay_logs()
is created which will rotate relay logs for all named slave.
This will be called in reload_acl_and_cache function when
connection_name.length == 0

1 files changed, 2 insertions, 0 deletions

diff --git a/sql/rpl_mi.h b/sql/rpl_mi.h
index 31c0f280ac1..d0f6171815c 100644
--- a/sql/rpl_mi.h
+++ b/sql/rpl_mi.h
@@ -302,6 +302,7 @@ class Master_info : public Slave_reporting_capability
   /* gtid_event_seen is false until we receive first GTID event from master. */
   bool gtid_event_seen;
   bool in_start_all_slaves, in_stop_all_slaves;
+  bool in_flush_all_relay_logs;
   uint users;                                   /* Active user for object */
   uint killed;
 
@@ -354,6 +355,7 @@ public:
   bool start_all_slaves(THD *thd);
   bool stop_all_slaves(THD *thd);
   void free_connections();
+  bool flush_all_relay_logs();
 };