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Glossary

TDSTORE_INSTALL_SNAPSHOT_INFO

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Last updated: 2026-02-10 11:06:31

Function
INFORMATION_SCHEMA.TDSTORE_INSTALL_SNAPSHOT_INFO is used to query the execution status of Install Snapshot tasks at the TDStore layer, including tasks in progress and completed historical tasks.
Field Description
Field Name
Type
Description
isLeader
varchar(64)
Whether the node is the Leader.
source_node
varchar(256)
The Leader Node address for the Install Snapshot task.
dest_node
varchar(256)
The Follower Node address for the Install Snapshot task.
term
bigint unsigned
Raft term.
type
varchar(64)
If it is the Leader, record the trigger reason for the Install Snapshot task:
Replica: issued by MC.
Log Delay: the log of the Follower node is lagging behind.
If it is a Follower, this field is empty.
replication_group_id
bigint unsigned
RG ID.
start_time
varchar(64)
The start time of the Install Snapshot task.
end_time
varchar(64)
The end time of the Install Snapshot task.
err_msg
varchar(256)
If the task fails, record the error message.
transfered_file_num
bigint
The number of Snapshot files pulled by the Follower. (If it is the Leader, this field is empty.)
transfered_file_size
bigint
The total size of Snapshot files pulled by the Follower. (If it is the Leader, this field is empty.)
total_file_num
bigint
The number of Snapshot files generated by the Leader. (If it is a Follower, this field is empty.)
total_file_size
bigint
The total size of Snapshot files generated by the Leader. (If it is a Follower, this field is empty.)
stage
varchar(64)
The status of the Install Snapshot task:
Doing: Installation of the Snapshot task is in progress.
Done: Installation of the Snapshot task has been completed.
cost_info
varchar(64)
Duration of the Install Snapshot task:
If it is the Leader, record the duration of the phase for generating Snapshot files.
If it is a Follower, record the duration of copying Snapshot files from the Leader.
Examples
tdsql> SELECT * FROM TDSTORE_INSTALL_SNAPSHOT_INFO limit 2\\G;
*************************** 1. row ***************************
           is_leader: false
         source_node: 10.10.10.252:20002:768:tpcc_cluster:node-tpcc_cluster-001:0
           dest_node: 10.10.10.10:20002:768:tpcc_cluster:node-tpcc_cluster-003:1
                term: 4
                type: NULL
        rep_group_id: 768
          start_time: 2024-08-27 11:15:46 367
            end_time: 2024-08-27 11:15:46 473
             err_msg: NULL
 transfered_file_num: 2
transfered_file_size: 10702037
      total_file_num: NULL
     total_file_size: NULL
               stage: done
           cost_info: DOWNLOAD_SNAPSHOT: 57ms
*************************** 2. row ***************************
           is_leader: true
         source_node: 10.10.10.252:20002:768:tpcc_cluster:node-tpcc_cluster-001:0
           dest_node: 10.10.10.10:20002:768:tpcc_cluster:node-tpcc_cluster-003:1
                term: 4
                type: Log Delay
        rep_group_id: 768
          start_time: 2024-08-27 11:15:46 505
            end_time: 2024-08-27 11:15:46 612
             err_msg: NULL
 transfered_file_num: NULL
transfered_file_size: NULL
      total_file_num: 2
     total_file_size: 10702037
               stage: done
           cost_info:  [INSTALL_SNAPSHOT: <COMPACT_SST_TO_LBASE: 35ms>, <GENERATE_AND_GET_HARD_LINK_SST_FILE: 0ms>] 
2 rows in set (0.00 sec)
﻿

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TDSQL Boundless

TDSTORE_INSTALL_SNAPSHOT_INFO

Function

Field Description

Examples

Help and Support

Field Name	Type	Description
isLeader	varchar(64)	Whether the node is the Leader.
source_node	varchar(256)	The Leader Node address for the Install Snapshot task.
dest_node	varchar(256)	The Follower Node address for the Install Snapshot task.
term	bigint unsigned	Raft term.
type	varchar(64)	If it is the Leader, record the trigger reason for the Install Snapshot task: `Replica`: issued by MC. `Log Delay`: the log of the Follower node is lagging behind. If it is a Follower, this field is empty.
replication_group_id	bigint unsigned	RG ID.
start_time	varchar(64)	The start time of the Install Snapshot task.
end_time	varchar(64)	The end time of the Install Snapshot task.
err_msg	varchar(256)	If the task fails, record the error message.
transfered_file_num	bigint	The number of Snapshot files pulled by the Follower. (If it is the Leader, this field is empty.)
transfered_file_size	bigint	The total size of Snapshot files pulled by the Follower. (If it is the Leader, this field is empty.)
total_file_num	bigint	The number of Snapshot files generated by the Leader. (If it is a Follower, this field is empty.)
total_file_size	bigint	The total size of Snapshot files generated by the Leader. (If it is a Follower, this field is empty.)
stage	varchar(64)	The status of the Install Snapshot task: `Doing`: Installation of the Snapshot task is in progress. `Done`: Installation of the Snapshot task has been completed.
cost_info	varchar(64)	Duration of the Install Snapshot task: If it is the Leader, record the duration of the phase for generating Snapshot files. If it is a Follower, record the duration of copying Snapshot files from the Leader.