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TDSTORE_LOCAL_METADATA_WRITE_FENCE

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Last updated: 2026-02-10 11:06:32

Function

INFORMATION_SCHEMA.TDSTORE_LOCAL_METADATA_WRITE_FENCE is used to display the write fence information for each replication group in nodes.

Field Description

Field Name
Type
Description
replication_group_id
bigint unsigned
ID of the replication group for the write fence.
schema_obj_id
int unsigned
ID of the write fence.
schema_obj_version
int unsigned
version of the write fence.
start_key
varchar(128)
start key of the write fence.
end_key
varchar(128)
end_key of the write fence.
is_online_ddl
bigint unsigned
Whether it is a write fence created for online ddl. (This field is currently deprecated.)

Examples

tdsql3_sys_local@localhost [information_schema]> select * from TDSTORE_LOCAL_METADATA_WRITE_FENCE limit 3 \\G
*************************** 1. row ***************************
replication_group_id: 257
       schema_obj_id: 10001
  schema_obj_version: 3
           start_key: 0x00002711
             end_key: 0x00002712
       is_online_ddl: 0
*************************** 2. row ***************************
replication_group_id: 257
       schema_obj_id: 10002
  schema_obj_version: 1
           start_key: 0x00002712
             end_key: 0x00002713
       is_online_ddl: 0
*************************** 3. row ***************************
replication_group_id: 257
       schema_obj_id: 10003
  schema_obj_version: 1
           start_key: 0x00002713
             end_key: 0x00002714
       is_online_ddl: 0
Previous Topic: TDSTORE_LOCAL_METADATA_TSO_METANext Topic: TDSTORE_PART_CTX

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