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-rw-r--r--sql/lock.cc6
1 files changed, 5 insertions, 1 deletions
diff --git a/sql/lock.cc b/sql/lock.cc
index 9886149ba77..be267f8d160 100644
--- a/sql/lock.cc
+++ b/sql/lock.cc
@@ -151,7 +151,11 @@ MYSQL_LOCK *mysql_lock_tables(THD *thd, TABLE **tables, uint count,
}
}
- if (write_lock_used && opt_readonly)
+ if ( write_lock_used
+ && opt_readonly
+ && ! (thd->security_ctx->master_access & SUPER_ACL)
+ && ! thd->slave_thread
+ )
{
/*
Someone has issued SET GLOBAL READ_ONLY=1 and we want a write lock.