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Airflow XComs live in the metadata database by default, with size limits that fail loudly or silently depending on your setup. Here's how to decide between passing references and a custom XCom backend.
Fewer rows than requested from /api/v1 list endpoints We are exporting a large set of DAG runs and task instances through the Airflow Stable REST API (2.x, /api/v1/dags/{dag_id}/dagRuns and /api/v1/dags/{dag_id}/taskInstances ). Our client requests a page size via the limit parameter and advances offset until the result set is exhausted. When the requested l
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