文档中是使用delowner ：
https://docs.pingcap.com/zh/tidb/stable/tidb-troubleshooting-map#31-ddl
tidb-ctl etcd delowner [LeaseID] [flags] + ownerKey
但实际命令里面没有delowner ：
/tmp/tidb-community-server-v5.4.0-linux-amd64 # ./tidb-ctl etcd delowner 7fe29d0d-1376-49f3-918f-37f6e8057c9d
control the info about etcd by grpc_gateway
Usage:
tidb-ctl etcd [command]
Available Commands:
ddlinfo Show All Information about DDL
delkey Delete the key associated with DDL by `delkey [key]`
putkey [ONLY FOR TEST!] put a key in the path of TiDB schema versions by `putkey [key] [value]`
Flags:
-h, --help help for etcd
Global Flags:
--ca string TLS CA path
--host ip TiDB server host (default 127.0.0.1)
--pdhost ip PD server host (default 127.0.0.1)
--pdport uint16 PD server port (default 2379)
--port uint16 TiDB server port (default 10080)
--ssl-cert string TLS Cert path
--ssl-key string TLS Key path
Use "tidb-ctl etcd [command] --help" for more information about a command.
subcommand is required
难道文档的是写错了 ？
就是要把etcd的key删了才能自动选择owner吗 ？