CHANGE PUMP

    1. +--------|----------------|--------|--------------------|---------------------|
    2. | NodeID |     Address    | State  |   Max_Commit_Ts    |    Update_Time      |
    3. +--------|----------------|--------|--------------------|---------------------|
    4. | pump1  | 127.0.0.1:8250 | Online | 408553768673342237 | 2019-04-30 00:00:01 |
    5. | pump2  | 127.0.0.2:8250 | Online | 408553768673342335 | 2019-05-01 00:00:02 |
    7. 2 rows in set (0.00 sec)
    1. Query OK, 0 rows affected (0.01 sec)
    2. | NodeID |     Address    | State  |   Max_Commit_Ts    |    Update_Time      |
    3. +--------|----------------|--------|--------------------|---------------------|
    4. +--------|----------------|--------|--------------------|---------------------|
    5. | pump2  | 127.0.0.2:8250 | Online | 408553768673342335 | 2019-05-01 00:00:02 |
    6. +--------|----------------|--------|--------------------|---------------------|