Comments - This is a question related to filter in version maxscale 2.2.21.
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It's likely that your pattern matches something you didn't expect in the query string. You could try using
match=tx_isolation *=andreplace=transaction_isolation=to limit it only to assignments oftx_isolation.I raised the errorlog level and looked at it, and found that tx_isolation was replaced with transaction_isolationtransaction_21-maxscale. The way I applied the filter is as above. Is there a way to solve this?
Do you have an example SQL statement where you see this happening?