Comment 3 for bug 1000221

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Alexey Kopytov (akopytov) wrote :

The reason is that the tablespace has been created with MySQL 5.0 where InnoDB did not set the FIL_PAGE_TYPE field appropriately, so that field may contain garbage for non-index pages. However, expanded import relies on that field to detect and update index pages. In this specific case, it crashed on an extent descriptor page because it assumed it to be an index page and tried to iterate records on it.