Instant DDL on ADD Column puts queries in opening tables state
Posted by: Sunny Nagra
Date: February 02, 2022 09:32AM

Hello,

I am new to this forum and had a question.

I have a large-ish DB running on 8.0.27 and every time I try to add a column using the algorithm=instant option, queries that aren't even querying against the table being altered start to show up in 'opening tables' state.

This brings our site to a halt and have to wait until this is completed. I last ran an alter table on a 68G table and this brought our site down for at least 10 mins.

Can anyone point me the correct direction as to what would be causing this and how I can resolve this?

Kind regards,
Sunny

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