When creating changefeeds to synchronize 1 million tables, some changefeeds did not schedule the dispatcher at all, causing the latency to keep rising.

[asddongmen]

1. I created 10 changefeeds in a row, and each changefeed was used to synchronize 1 million tables. Among these 10 changefeeds, 9 successfully completed the initialization and dispatcher scheduling. However, the number of dispatchers for one of the changefeeds remained 0 all the time.
2. Then, I tried to remove this changefeed, but the operation failed.