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InnoDB full-text index corruption

In a recent customer engagement we experienced a lot of corrupted (normal) indexes and also corrupted full-text indexes on InnoDB tables in a Galera Cluster (v10.4.13).

In the error log we did not see which table it was but we have only a few log entries every here and there indicating a full-table index is corrupt:

Undefined

Full-Text Search Engines

MySQL has also a Full-Text Search Engine built in. But this Search Engine is not as fast a you probably want to. Thus there are some alternative Full-Text Search Engines which might be working together with MySQL.

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