ElasticSearch: 'SHOW CATALOGS' caused invalid sql syntax

[Ledar]

Bug Description
When establishing a connection to Elasticsearch 7.15.1, the connection fails immediately with a parsing_exception. The driver/client appears to be sending a SHOW CATALOGS statement during connection initialization, which is not valid Elasticsearch SQL syntax.
Error Log
Connection: 'es' failed: ResponseError: parsing_exception
Caused by:
no_viable_alt_exception: null
Root causes:
parsing_exception: line 1:6: no viable alternative at input 'SHOW CATALOGS'

[mikeburgh]

Fixed in 1.28.8 which has been released.