TiCDC may lose row changes during renaming table

[tangenta]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

1. Create a TiCDC changefeed like

[filter]
rulse = ["sysbench.sbtest1"]

2. Execute the following command in upstream TiDB:

sysbench oltp_insert.lua --mysql-host=XXXX--mysql-port=XXXX --mysql-user=sysbench --mysql-password=XXXXX --mysql-db=sysbench --tables=1 --table_size=2000 --time=3600 --report-interval=5 --threads=1 prepare

sysbench oltp_insert.lua --mysql-host=XXXX--mysql-port=XXXX --mysql-user=sysbench --mysql-password=XXXXX --mysql-db=sysbench --tables=1 --table_size=2000 --time=3600 --report-interval=5 --threads=1 run

3. Rename table on the fly:

RENAME TABLE `sbtest1` TO `sbtest99`;

4. Wait for the sysbench failure.

2. What did you expect to see? (Required)

The row data is consistent between upstream and downstream.

3. What did you see instead (Required)

Several row records get lost in downstream TiDB.

4. What is your TiDB version? (Required)

96fa469