【TiDB 使用环境】测试环境
【TiDB 版本】v7.5.6
【操作系统】centos
【部署方式】机器部署
【问题复现路径】做过哪些操作出现的问题
【遇到的问题：问题现象及影响】
将同步表从varchar改为text后，ticdc任务同步报错，表结构是创建任务的时候缓存的吗？
github.com/pingcap/tiflow/pkg/sink/codec/maxwell.rowChangeToMaxwellMsg(0xc003f020b0, 0x0)
github.com/pingcap/tiflow/pkg/sink/codec/maxwell/maxwell_message.go:118 +0x758
github.com/pingcap/tiflow/pkg/sink/codec/maxwell.(*BatchEncoder).AppendRowChangedEvent(0xc00842dd40, {0xc007f8de8c?, 0x0?}, {0x0?, 0x0?}, 0x1?, 0xc002a073a0)
github.com/pingcap/tiflow/pkg/sink/codec/maxwell/maxwell_encoder.go:52 +0x2f
github.com/pingcap/tiflow/pkg/sink/codec.(*encoderGroup).runEncoder(0xc003601f80, {0x57b2e48, 0xc002e1bef0}, 0x1)
github.com/pingcap/tiflow/pkg/sink/codec/encoder_group.go:116 +0x366
github.com/pingcap/tiflow/pkg/sink/codec.(*encoderGroup).Run.func2()
github.com/pingcap/tiflow/pkg/sink/codec/encoder_group.go:95 +0x26
golang.org/x/sync/errgroup.(*Group).Go.func1()
golang.org/x/sync@v0.3.0/errgroup/errgroup.go:75 +0x56
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 1390
golang.org/x/sync@v0.3.0/errgroup/errgroup.go:72 +0x96
panic: interface conversion: interface {} is string, not []uint8
原来是已弃用的，我们改一下吧。