Convert all tables to use UTF8MB4 charset #9767
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We have seen an increasing number of errors recently relating to publishers attempting to use 4 byte characters in Whitehall. This commit adds a data migration which will convert all of the tables to use the UTF8MB4 charset. This uses a data migration because it is not subject to the 15 minute limit for schema migrations applied in the kubernetes configuration. The migration will need to be run out of hours as the tables will need to be locked during conversion.
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We have seen an increasing number of errors recently relating to publishers attempting to use 4 byte characters in Whitehall. This commit adds a data migration which will convert all of the tables to use the UTF8MB4 charset. This uses a data migration because it is not subject to the 15 minute limit for schema migrations applied in the kubernetes configuration.
The migration will need to be run out of hours as the tables will need to be locked during conversion.
Trello: https://trello.com/c/aTlLraLX