Mysql 8.0 “ERROR 1030 (HY000): Got error 100” when adding index to very large table

The question:

I’m attempting to add an index to a very large table (2B rows) and the command fails after a few hours with:

ERROR 1030 (HY000): Got error 100 – ‘InnoDB error’ from storage engine

I’m finding the InnoDB 100 error code to be ungoogleable. It seems to be running out of some kind of resource, but the server has 128 GB of RAM and tons of disk space. Mysql isn’t crashing.

I think maybe I need some config tweaks to give it more juice, but I don’t know where to start.

Server version: Server version: 8.0.28
Db engine: InnoDB

The Solutions:

Below are the methods you can try. The first solution is probably the best. Try others if the first one doesn’t work. Senior developers aren’t just copying/pasting – they read the methods carefully & apply them wisely to each case.

Method 1

Perhaps the setting for tmpdir is pointing into a small disk partition. Check


All methods was sourced from or, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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