ticdc: when start a redo changefeed, ticdc panicked

[AkiraXie]

What did you do?

1. open a mysql-sink changefeed with redo log

What did you expect to see?

No response

What did you see instead?

[WARN] TiCDC server data-dir is not set. Please use cdc server --data-dir to start the cdc server if possible.
panic: non-positive interval for NewTicker

goroutine 1587 [running]:
time.NewTicker(0xc00025ed60?)
time/tick.go:22 +0xe5
github.com/pingcap/tiflow/cdc/redo.(*logManager).bgUpdateLog(0xc00cc782a0, {0x7fef9294bb10, 0xc00ce2d660}, 0x0)
github.com/pingcap/tiflow/cdc/redo/manager.go:497 +0xb8
github.com/pingcap/tiflow/cdc/redo.(*logManager).Run(0xc00cc782a0, {0x7fef9294bb10, 0xc00ce2d660}, {0x4447f00?, 0x462f9c0?, 0x0?})
github.com/pingcap/tiflow/cdc/redo/manager.go:277 +0x13c
github.com/pingcap/tiflow/cdc/owner.(*changefeed).initialize.func5()
github.com/pingcap/tiflow/cdc/owner/changefeed.go:596 +0xaa
created by github.com/pingcap/tiflow/cdc/owner.(*changefeed).initialize in goroutine 724
github.com/pingcap/tiflow/cdc/owner/changefeed.go:594 +0xe99

Versions of the cluster

Upstream TiDB cluster version (execute SELECT tidb_version(); in a MySQL client):

(paste TiDB cluster version here)

Upstream TiKV version (execute tikv-server --version):

(paste TiKV version here)

TiCDC version (execute cdc version):

release-7.5
sh-5.1# /cdc version
Release Version: v7.5.0
Git Commit Hash: 50b7aa338a042cfd79ea2fd969ff9e0fe4464cb5
Git Branch: heads/refs/tags/v7.5.0
UTC Build Time: 2023-11-14 10:44:31
Go Version: go version go1.21.3 linux/amd64
Failpoint Build: false

[AkiraXie]

/severity critical

[AkiraXie]

/affects 7.5

[nongfushanquan]

/assign @sdojjy

[sdojjy]

some new changefeed redo configuration items are added in new ticdc version, and the changefeed created by old version has no default value.

workaround:

1. downgrade ticdc and pause changefeed,
2. upgrade ticdc again,
3. use ticdc cli to update the changefeed configuration
   consistent.meta-flush-interval
4. resume changefeed