lightning should retry with error "write to tikv with no leader returned"

[GMHDBJD]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

import data with lightning

2. What did you expect to see? (Required)

import succeed

3. What did you see instead (Required)

[2023/07/28 13:30:02.226 +00:00] [ERROR] [backend.go:350] ["import failed"] [engineTag=`bsc`.`erc20_transfer`:9] [engineUUID=c73cf392-09cb-52e1-bcc3-310733ed3d12] [retryCnt=0] [takeTime=1m27.176226425s] [error="write to tikv with no leader returned, region '1800720', leader: 0"]

4. What is your TiDB version? (Required)

v7.1.1

[lance6716]

[2023/07/28 13:30:01.981 +00:00] [WARN] [region_job.go:364] ["write to tikv no leader"] [region="{ID=1800720,startKey=xxx,endKey=xxx,epoch="conf_ver:4889 version:66893 ",peers="id:1800721 store_id:1 ,id:1800722 store_id:28009 ,id:1800723 store_id:28010 "}"] [leader=] [leader_id=0] [sstMeta="{CF=endKeyExclusive=false,CRC32=0,length=0,regionID=1800720,regionEpoch="conf_ver:4889 version:66893 ",startKey=xxx,endKey=xxx,UUID=ca98a512-9e56-4be2-87cf-438b2f10a532}"] [kv_pairs=352211] [total_bytes=94662678]

seems this time it really has no leader