From 203dd2875a6cdb4b25c6cf7ea20a38fa3411122f Mon Sep 17 00:00:00 2001
From: Teemu Ollakka <teemu.ollakka@galeracluster.com>
Date: Wed, 27 Jun 2018 16:15:09 +0300
Subject: [PATCH] Deal with desyncs in on_sync() call.

---
 src/server_state.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/server_state.cpp b/src/server_state.cpp
index ce6a1fc..9d04469 100644
--- a/src/server_state.cpp
+++ b/src/server_state.cpp
@@ -619,7 +619,13 @@ void wsrep::server_state::on_sync()
     }
     else
     {
-        state(lock, s_synced);
+        // Calls to on_sync() in synced state are possible if
+        // server desyncs itself from the group. Provider does not
+        // inform about this through callbacks.
+        if (state_ != s_synced)
+        {
+            state(lock, s_synced);
+        }
     }
     init_synced_ = true;
 }