if (func.auth ==)gw_change_user->gw_send_change_user_to_backend is called before backend has its scramble, auth packet is set to backend's delauqueue instead of writing it to backend. When backend_write_delayqueue is called COM_CHANGE_USER packets are rewritten with backend's current data.
mysql_common.c:gw_send_change_user_to_backend creates new authentication message which is to be sent to backend. GWBUG type flags were not copied from original GWBUF to new one. Thus the information that this is a session command was lost and it was processed in a wrong way. Especially replies were all routed back to client which caused misbehavior.
Client flags are now copied to each backend and used in their connections.
log_manager.cc: fixed string allocation where one byte was missing.
mysql_client.c: fixed string allocation where one byte was missing.
Also changed 'authorization failed' to 'access denied'
mysql_common.c: fixed memory leak in gw_receive_backend_auth, and replaced error code '2800' with '28000'.
readconnroute.c:handleError didn't set *succp pointer so uninitialized value was used in caller's context.
makefile.inc: added -lm to linker flags
mysql_backend.c: added a few comments
query_classifier.cc: added function for printing combined query type from a bit field.
query_classifier.h: identify query types SHOW DATABASE, and SHOW TABLES to make log entries more understandable.
mysql_common.c: moved some trace log commands to debug log.
readwritesplit.c: moved some trace logs to debug log, added trace log commands to gather routing, query type and session information to one log entry.
skygw_debug.h: added string macros for several query and hint types.
Execution of session commands failed because session commands and normal sql statements were executed in a wrong order if backend was executing previous session command while new sql stmt was routed to that backend. There was a window where ordering went wrong.
It is possible that one normal sql stmt arrives while previous sescmds are still being executed.
Introduced a new member in backend_ref_t structure, bref_pending_cmd where new sql stmt pointer is stored in that case. When sescmds are executed completely, that command is automatically executed next.
Long ~0.5MB queries blocked MaxScale.
mysql_client.c:gw_read_client_event: Fixed packet reading logic. Reading didn't work when packet exceeded read buffer size.
mysql_common.c:gw_MySQL_get_next_packet: number of bytes to be copied to continuous buffer was calculated wrong, thus resulting in broken packet.
readwritesplit.c:disabled creation of canonical query in debug build because it slows down the processing too much with long queries
New service parameter ‘localhost_match_any’ allows localhost matching
the wildcard host.
Default value is 0, don’t match.
It may be changed if backend servers don’t have the anonymous user
‘’@localhost
mysql_common.c:gw_MySQL_get_next_packet didn't handle case where an insert command followed by alter table in the same read buffer. It shouldn't been possible without multi-statement being set.
