Binlogctl Generate meta problem

[sakufo]

I need to synchronize the tidb data to the downstream mysql, which is the production library being used. My question is that I use binlogctl to get the meta information, then use mydumper to prepare. There will be a short time difference in this process. How to solve the meta in this time difference and a new change problem has occurred? I personally think that a good solution is to automatically record the meta information during the mydumper process and write it directly to the downstream table when importing. When the Drainer is started to synchronize data to the downstream database, the meta is read and the data is written starting from the next pos.

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[jackysp]

Thanks for your report, @sakufo ! PTAL @kennytm .

[WangXiangUSTC]

it dosen't matter, drainer can guarantee the binlog's idempotency.