Feature
This view displays the Palf status information.
Note
Common application scenarios:
- Query whether a log stream has a leader.
- Query the member list (number of Paxos replicas) of a log stream.
- Query the replica synchronization status.
- Query the recyclable checkpoint of the logs of a log stream.
- Query the log consumption service scope of a log stream based on the log sequence number (LSN) or system change number (SCN).
- Query the access mode of Palf.
- Other troubleshooting scenarios.
Fields
| Field | Type | Nullable | Description |
|---|---|---|---|
| TENANT_ID | bigint(20) | NO | The ID of the tenant. |
| LS_ID | bigint(20) | NO | The log stream ID. |
| SVR_IP | varchar(46) | NO | The IP address of the OBServer. |
| SVR_PORT | bigint(20) | NO | The port number of the OBServer. |
| ROLE | varchar(32) | NO | The role of the replica. Valid values: |
| PROPOSAL_ID | bigint(20) | NO | The proposal ID of Paxos. |
| CONFIG_VERSION | varchar(128) | NO | The version number corresponding to the configuration change, such as change of the member list, number of replicas, and access mode. |
| ACCESS_MODE | varchar(32) | NO | The access mode. Valid values: |
| PAXOS_MEMBER_LIST | varchar(1024) | NO | The list of Paxos members. |
| PAXOS_REPLICA_NUM | bigint(20) | NO | The number of Paxos replicas. |
| ALLOW_VOTE | varchar(3) | NO | Indicates whether to allow to vote in log synchronization. Valid values: |
| REPLICA_TYPE | varchar(32) | NO | The replica type. Valid values: |
| BASE_LSN | bigint(20) unsigned | NO | The maximum recyclable checkpoint. |
| BEGIN_LSN | bigint(20) unsigned | NO | The LSN of the minimum consumption checkpoint. |
| BEGIN_SCN | bigint(20) unsigned | NO | The SCN of the minimum consumption checkpoint. |
| END_LSN | bigint(20) unsigned | NO | The LSN of the maximum consecutive majority checkpoint, also known as the maximum consumption checkpoint. |
| END_SCN | bigint(20) unsigned | NO | The SCN of the maximum consecutive majority checkpoint, also known as the maximum consumption checkpoint. |
| MAX_LSN | bigint(20) unsigned | NO | The LSN of the maximum write point. |
| MAX_SCN | bigint(20) unsigned | NO | The SCN of the maximum write point. |