[MXS-4233] MaxScale tries to query @@session_track_system_variables despite causal_reads=none Created: 2022-08-04  Updated: 2022-08-05  Resolved: 2022-08-05

Status: Closed
Project: MariaDB MaxScale
Component/s: readwritesplit
Affects Version/s: 6.4.0, 6.4.1
Fix Version/s: N/A

Type: Bug Priority: Minor
Reporter: Phil Sumner Assignee: Unassigned
Resolution: Won't Fix Votes: 0
Labels: None
Environment:

CentOS 7.9.2009



 Description   

sql_errors log on 10.1.48 database is being filled with messages like:

2022-08-04 10:12:12 replication[replication] @ xxxx.xxxx.xxxx.xxxx[xx.xx.xx.xx] ERROR 1193: Unknown system variable 'session_track_system_variables' : select @@session_track_system_variables

Despite causal_reads=none in the maxscale config file in the readwritesplit section and the MaxScale service having been restarted.



 Comments   
Comment by Johan Wikman [ 2022-08-05 ]

10.1 reached its EOL Oct 17th 2020 and session_track_system_variables is present since 10.2, which incidentally has also reached its EOL, so this won't be fixed. 10.1 is very old. I would suggest an upgrade.

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