PingCAP

tidb MVCC API

Endpoints for retrieving multi-version concurrency control (MVCC) key details for debugging.

Documentation GitHub OpenAPI

Operations 2

GET /mvcc/key/{db}/{table}/{handle} Get MVCC info by row handle #

GET /mvcc/hex/{hexKey} Get MVCC info by hex key #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: TiDB HTTP MVCC API
  description: The TiDB HTTP API is a built-in administrative interface available on self-managed TiDB server instances, accessible on port 10080 by default.
  version: '1.0'
  contact:
    name: TiDB GitHub
    url: https://github.com/pingcap/tidb/blob/master/docs/tidb_http_api.md
  termsOfService: https://www.apache.org/licenses/LICENSE-2.0
servers:
- url: http://localhost:10080
  description: Local TiDB Node (default status port)
tags:
- name: MVCC
  description: Endpoints for retrieving multi-version concurrency control (MVCC) key details for debugging.
paths:
  /mvcc/key/{db}/{table}/{handle}:
    get:
      operationId: getMvccByHandle
      summary: Get MVCC info by row handle
      description: Returns multi-version concurrency control (MVCC) information for the key corresponding to the specified row handle in a table. Shows all versions of the key across transactions, including start timestamp, commit timestamp, and value. Used for debugging transaction conflicts and stale data issues.
      tags:
      - MVCC
      parameters:
      - $ref: '#/components/parameters/db'
      - $ref: '#/components/parameters/table'
      - name: handle
        in: path
        description: The row handle (primary key value or internal row ID) for the target row.
        required: true
        schema:
          type: string
      responses:
        '200':
          description: MVCC information retrieved successfully.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MvccInfo'
        '404':
          description: The specified database, table, or handle was not found.
  /mvcc/hex/{hexKey}:
    get:
      operationId: getMvccByHexKey
      summary: Get MVCC info by hex key
      description: Returns MVCC information for a key specified as a hexadecimal string. This endpoint is used when you have the raw encoded key from TiKV region information and need to look up the MVCC history for that specific key.
      tags:
      - MVCC
      parameters:
      - name: hexKey
        in: path
        description: The raw key encoded as a hexadecimal string.
        required: true
        schema:
          type: string
      responses:
        '200':
          description: MVCC information retrieved successfully.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MvccInfo'
components:
  schemas:
    MvccInfo:
      type: object
      description: MVCC version history for a TiKV key.
      properties:
        key:
          type: string
          description: The hexadecimal-encoded key.
        mvcc:
          type: object
          description: The MVCC data for this key.
          properties:
            info:
              type: object
              description: Raw MVCC information including lock, writes, and values.
  parameters:
    table:
      name: table
      in: path
      description: The table name within the specified database.
      required: true
      schema:
        type: string
    db:
      name: db
      in: path
      description: The database name.
      required: true
      schema:
        type: string
externalDocs:
  description: TiDB HTTP API Reference
  url: https://github.com/pingcap/tidb/blob/master/docs/tidb_http_api.md