表查询报错 PD server timeout

mysql> SHOW CONFIG WHERE NAME LIKE '%pd%timeout%' OR NAME LIKE '%pd%retry%';
+---------+--------------------+------------------------------------+---------------------+
| Type    | Instance           | Name                               | Value               |
+---------+--------------------+------------------------------------+---------------------+
| tidb    | 10.235.38.63:4000  | pd-client.pd-server-timeout        | 3                   |
| tikv    | 10.235.38.65:20160 | pd.retry-interval                  | 300ms               |
| tikv    | 10.235.38.65:20160 | pd.retry-log-every                 | 10                  |
| tikv    | 10.235.38.65:20160 | pd.retry-max-count                 | 9223372036854776000 |
| tikv    | 10.235.38.64:20160 | pd.retry-interval                  | 300ms               |
| tikv    | 10.235.38.64:20160 | pd.retry-log-every                 | 10                  |
| tikv    | 10.235.38.64:20160 | pd.retry-max-count                 | 9223372036854776000 |
| tiflash | 10.235.38.69:3930  | raftstore-proxy.pd.retry-interval  | 300ms               |
| tiflash | 10.235.38.69:3930  | raftstore-proxy.pd.retry-log-every | 10                  |
| tiflash | 10.235.38.69:3930  | raftstore-proxy.pd.retry-max-count | 9223372036854776000 |
| tiflash | 10.235.38.68:3930  | raftstore-proxy.pd.retry-interval  | 300ms               |
| tiflash | 10.235.38.68:3930  | raftstore-proxy.pd.retry-log-every | 10                  |
| tiflash | 10.235.38.68:3930  | raftstore-proxy.pd.retry-max-count | 9223372036854776000 |
| tikv    | 10.235.38.66:20160 | pd.retry-interval                  | 300ms               |
| tikv    | 10.235.38.66:20160 | pd.retry-log-every                 | 10                  |
| tikv    | 10.235.38.66:20160 | pd.retry-max-count                 | 9223372036854776000 |
+---------+--------------------+------------------------------------+---------------------+