abhishekagarwal87 commented on code in PR #15334: URL: https://github.com/apache/druid/pull/15334#discussion_r1386300286
########## docs/development/extensions-core/postgresql.md: ########## @@ -27,6 +27,9 @@ To use this Apache Druid extension, [include](../../configuration/extensions.md# ## Setting up PostgreSQL +To avoid issues with upgrades that require schema changes to a large metadata table, chose a PostgreSQL version that supports instant ADD COLUMN semantics. +For example, any currently supported version of PostgreSQL, version 11 or later. Review Comment: Version 11 supports instant add where the default value of new column is not null. So far, I haven't found a scenario where we added a column with non-null default value. So we can get rid of this line. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
