Checkpoint lag gets larger as the number captured tables increases #3900
Description
What did you do?
| 1k tables | 2k tables |
|---|---|
 |
 |
 |
 |
What did you expect to see?
Checkpoint lag should be within 10s when capturing 2k tables.
What did you see instead?
Checkpoint lag is much larger than 10s when capturing 2k tables.
Versions of the cluster
Upstream TiDB cluster version (execute SELECT tidb_version(); in a MySQL client):
TiCDC version (execute cdc version):
https://github.com/pingcap/ticdc/tree/d381504a9fc3e5e6615e17627c424ec5bd17b0b4