Note:
This topic has been translated from a Chinese forum by GPT and might contain errors.
Original topic: mysql 同步到 tidb 的工具同步数据丢数据。
I followed the documentation above to synchronize data from MySQL to TiDB. After the synchronization was completed, it indicated that the synchronization was finished. However, a large amount of data was lost. Why is this happening?
How did it get lost, and how did you verify it?
Here is an example of a completed log.
More detailed problem description is needed.
Wild guess: incomplete sharded data, only a few shards of data. 
I found the logs, what are the characteristics of the missing data?
Please provide detailed steps and phenomena.
Lose full data or incremental data
It feels like a personal usage issue 