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soundcloud / lhm

Online MySQL schema migrations
BSD 3-Clause "New" or "Revised" License
1.83k stars 190 forks source link

Checkpoint progress of the copy #103

Closed johnf closed 7 years ago

johnf commented 9 years ago

My intention here was to be able to have a copy that you could interrupt and then kick off again.

It is most of the way there in terms of checkpointing, just needs some further checks on the second run to not care about tables exisitng etc.

I've stopped for now because I wrote this because I had given up on live DDL updates in MySQL 5.6

About 8 hours into this stask my updated started progressing again.

Will come back to this if I hit another brick wall, leaving it here incase someone finds it useful.

johnf commented 7 years ago

Closing ancient old open pull requests