add index failed with error “Error 1105 (HY000): PD invalid response” when kill pdleader

[Lily2025]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

tidb_enable_dist_task='on'
1、run workload
2、add index for one table
3、kill pdleader

case config：
workloads:
- type: sysbench
storage: s3://benchmark/sysbench_64_7000w
db: sysbench_64_7000w
tableNum: 64
tableSize: 70000000
threads: 64
subType: oltp_read_write
ignoreErrors: "all"
cases:
- name: "ha_pdleader_kill"
warmUpTime: 1m
faultType: kill
selector: "pd(leader)"
period: "@every 5m"
faultDuration: 1m
faultTotalRunTime: 30m
ddl:
addIndex:
- db: "sysbench_64_7000w"
table: "sbtest1"
timeout: 60m
times: 5
index_col_name: "c"
job_type: "ingest"
admin_check: true
count_check: false

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

add index can success

3. What did you see instead (Required)

add index failed with error “Error 1105 (HY000): PD invalid response” when kill pdleader

add index failed at 2023-11-01 16:13:49 (Error 1105 (HY000): PD invalid response)
operatorLogs:
[2023-11-01 16:11:36] ###### start adding index
alter table sbtest1 add index index_test_1698826296315 (c)
[2023-11-01 16:11:36] ###### wait for ddl job finish

4. What is your TiDB version? (Required)

git hash：5f7b6973b0d730b446d840733f213ad6637bee1f

[Lily2025]

/assign ywqzzy

[ywqzzy]

tikv/pd#7251

[Lily2025]

tikv/pd#7251

maybe is not the same issue because pd can elect leader when kill leader