Apache Airflow · JSON Structure

Openapi.Yaml Task Instance Structure

TaskInstance schema from Apache Airflow API

Type: object Properties: 26

ApacheDAGData PipelineETLOpen SourceOrchestrationPythonSchedulingWorkflow

TaskInstance is a JSON Structure definition published by Apache Airflow, describing 26 properties. It conforms to the https://json-structure.org/meta/core/v0/# meta-schema.

Properties

dag_id dag_run_id duration end_date execution_date executor_config hostname map_index max_tries note operator pid pool pool_slots priority_weight queue queued_when rendered_fields sla_miss start_date state task_id trigger triggerer_job try_number unixname

Meta-schema: https://json-structure.org/meta/core/v0/#

JSON Structure

{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/apache-airflow/refs/heads/main/json-structure/openapi.yaml-task-instance-structure.json",
  "name": "TaskInstance",
  "description": "TaskInstance schema from Apache Airflow API",
  "type": "object",
  "properties": {
    "dag_id": {
      "type": "string"
    },
    "dag_run_id": {
      "description": "The DagRun ID for this task instance\n\n*New in version 2.3.0*\n",
      "type": "string"
    },
    "duration": {
      "nullable": true,
      "type": "number"
    },
    "end_date": {
      "format": "datetime",
      "nullable": true,
      "type": "string"
    },
    "execution_date": {
      "format": "datetime",
      "type": "string"
    },
    "executor_config": {
      "type": "string"
    },
    "hostname": {
      "type": "string"
    },
    "map_index": {
      "type": "integer"
    },
    "max_tries": {
      "type": "integer"
    },
    "note": {
      "description": "Contains manually entered notes by the user about the TaskInstance.\n\n*New in version 2.5.0*\n",
      "nullable": true,
      "type": "string"
    },
    "operator": {
      "description": "*Changed in version 2.1.1*&#58; Field becomes nullable.\n",
      "nullable": true,
      "type": "string"
    },
    "pid": {
      "nullable": true,
      "type": "integer"
    },
    "pool": {
      "type": "string"
    },
    "pool_slots": {
      "type": "integer"
    },
    "priority_weight": {
      "nullable": true,
      "type": "integer"
    },
    "queue": {
      "nullable": true,
      "type": "string"
    },
    "queued_when": {
      "nullable": true,
      "type": "string"
    },
    "rendered_fields": {
      "description": "JSON object describing rendered fields.\n\n*New in version 2.3.0*\n",
      "type": "object"
    },
    "sla_miss": {
      "$ref": "#/components/schemas/SLAMiss",
      "nullable": true
    },
    "start_date": {
      "format": "datetime",
      "nullable": true,
      "type": "string"
    },
    "state": {
      "$ref": "#/components/schemas/TaskState",
      "nullable": true
    },
    "task_id": {
      "type": "string"
    },
    "trigger": {
      "$ref": "#/components/schemas/Trigger",
      "nullable": true
    },
    "triggerer_job": {
      "$ref": "#/components/schemas/Job",
      "nullable": true
    },
    "try_number": {
      "type": "integer"
    },
    "unixname": {
      "type": "string"
    }
  }
}