pause-task returns some connections errors

[csuzhangxc]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. What did you do? If possible, provide a recipe for reproducing the error.

pause-task

2. What did you expect to see?

the task paused without errors.

3. What did you see instead?

"ErrCode": 10006,
"ErrClass": "database",
"ErrScope": "not-set",
"ErrLevel": "high",
"Message": "startLocation: [position: (mysql-bin.000029, 971322922), gtid-set: ], endLocation: [position: (mysql-bin.000029, 971323148), gtid-set: ]: execute statement failed: begin",
"RawCause": "sql: connection is already closed",
"Workaround": ""

4. Versions of the cluster

   • DM version (run dmctl -V or dm-worker -V or dm-master -V):

     Release Version: v2.0.0-beta.2-197-g5003e431
     Git Commit Hash: 5003e431f07169377f9afa3739ed0dace54be2fb
     Git Branch: master
     UTC Build Time: 2020-10-23 11:07:11
     Go Version: go version go1.13 linux/amd64
     

pause-task-connection.log