Error after upgrade to 3.15.00 about bastillion HOT 3 OPEN

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@RSCCD-JeremyCollins have you been able to fix the 503? If so, do you remember what you did to fix it?

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@skavanagh The H2 developers increased the database format version once more for H2 version 2.2.220+ (see the corresponding PR). Since the 3.15.00 release of Bastillion contains the update to H2 2.2.220, updating Bastillion will once again require a database migration. The bastillion-upgrade-4.00.01.jar only supports database migrations from write format 1 (H2 pre v2) to write format 2 (H2 2.0.X and 2.1.X). The page you linked only concerns updates from write format 1 to write format 2 too. The new write format is 3, as can be seen from the error message:

org.h2.mvstore.MVStoreException: The write format 2 is smaller than the supported format 3 [2.2.220/5]

The migration tool should support upgrading to the new write format, but I could not get it to work. Would it be possible for you to update the bastillion-upgrade tool to support upgrading to the new write format? As far as I understand the process should stay the same - export with old driver and import with new driver, right?

On another note: H2 2.2.220 apparently had a race condition which could cause DB corruption - this was fixed in 2.2.222. H2 2.2.222 had a performance regression fixed in 2.2.224. I don't know if these issues affect the Bastillion DB, but it might be better to update H2 to 2.2.224 to be on the safe side.

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