ProxySQL crashes if client is not able to keep up with records returned and query has a warning condition

Show Warning check is added to avoid infinite loop
3 years ago · 4e44551dd2
parent da9df6d48c
commit 4e44551dd2
1 changed files with 2 additions and 1 deletions
--- a/lib/mysql_connection.cpp
+++ b/lib/mysql_connection.cpp
@ -1526,7 +1526,8 @@ handler_again:
 			break;
 		case ASYNC_USE_RESULT_CONT:
 			{
-				if (myds->sess && myds->sess->client_myds && myds->sess->mirror==false) {
+				if (myds->sess && myds->sess->client_myds && myds->sess->mirror==false &&
+					myds->sess->status != SHOW_WARNINGS) { // see issue#4072
 					unsigned int buffered_data=0;
 					buffered_data = myds->sess->client_myds->PSarrayOUT->len * RESULTSET_BUFLEN;
 					buffered_data += myds->sess->client_myds->resultset->len * RESULTSET_BUFLEN;