Schema:

ACCOUNT_USAGE

COMPLETE_TASK_GRAPHS View

This Account Usage view can be used to query the status of completed graph runs (i.e. runs that executed successfully, failed, or were cancelled). A graph is currently defined as a single scheduled task or a DAG of tasks composed of a scheduled root task and one or more child tasks (i.e. tasks that have a defined predecessor task). For the purposes of this function, root task refers to either the single scheduled task or the root task in a DAG.

The view avoids the 10,000 row limitation of the COMPLETE_TASK_GRAPHS.

Columns

Column Name

Data Type

Description

ROOT_TASK_NAME

TEXT

Name of the root task.

DATABASE_NAME

TEXT

Name of the database that contains the graph.

SCHEMA_NAME

TEXT

Name of the schema that contains the graph.

STATE

TEXT

State of the graph run:

  • SUCCEEDED: All tasks in the graph ran successfully to completion, or the root task run succeeded and one or more child task runs were skipped.

  • FAILED: One or more task runs in the graph failed, or the root task run succeeded and one or more child task runs failed.

  • CANCELLED: One or more task runs in the graph were cancelled, or the root task run succeeded and one or more child task runs were cancelled.

Note that if the state of the root task run is SKIPPED, the function does not return a row for the run.

FIRST_ERROR_TASK_NAME

TEXT

Name of the first task in the graph that returned an error; returns NULL if no task produced an error.

FIRST_ERROR_CODE

NUMBER

Error code of the error returned by the task named in FIRST_ERROR_TASK_NAME; returns NULL if no task produced an error.

FIRST_ERROR_MESSAGE

TEXT

Error message of the error returned by the task named in FIRST_ERROR_TASK_NAME; returns NULL if no task produced an error.

SCHEDULED_TIME

TIMESTAMP_LTZ

Time when the root task was scheduled to start running. Note that we make a best effort to ensure absolute precision, but only guarantee that tasks do not execute before the scheduled time.

QUERY_START_TIME

TIMESTAMP_LTZ

Time when the query in the root task definition started to run. This timestamp aligns with the start time for the query returned by QUERY_HISTORY.

NEXT_SCHEDULED_TIME

TIMESTAMP_LTZ

Time when the standalone or root task (in a DAG of tasks) is next scheduled to start running, assuming the current run of the standalone task or DAG started at the SCHEDULED_TIME time completes in time.

COMPLETED_TIME

TIMESTAMP_LTZ

Time when all tasks in the graph were completed.

ROOT_TASK_ID

TEXT

Unique identifier for the root task in a DAG. This ID matches the ID column value in the SHOW TASKS output for the same task.

GRAPH_VERSION

NUMBER

Integer identifying the version of the DAG that was run, or is scheduled to be run.

RUN_ID

NUMBER

Time when the standalone or root task in a DAG is/was originally scheduled to start running. Format is epoch time (in milliseconds). The combination of the ROOT_TASK_ID and RUN_ID values identifies a specific run of a DAG. . Original scheduled time refers to rare instances when the system may reschedule the same task to run at a different time to retry it or rebalance the load. If that happens, RUN_ID shows the original scheduled run time and SCHEDULED_TIME shows the rescheduled run time.

Usage Notes

  • Latency for the view may be up to 45 minutes.

  • The view only displays objects for which the current role for the session has been granted access privileges.

Examples

Retrieve records for the 10 most recent task graph runs completed in your account:

select * from snowflake.account_usage.complete_task_graphs
  limit 10;
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