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19 lines
2.5 KiB
Markdown
19 lines
2.5 KiB
Markdown
# Lineage sample code
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The following samples will cover emitting dataset-to-dataset, dataset-to-job-to-dataset, chart-to-dataset, dashboard-to-chart and job-to-dataflow lineages.
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- [lineage_emitter_mcpw_rest.py](../../metadata-ingestion/examples/library/lineage_emitter_mcpw_rest.py) - emits simple bigquery table-to-table (dataset-to-dataset) lineage via REST as MetadataChangeProposalWrapper.
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- [lineage_dataset_job_dataset.py](../../metadata-ingestion/examples/library/lineage_dataset_job_dataset.py) - emits mysql-to-airflow-to-kafka (dataset-to-job-to-dataset) lineage via REST as MetadataChangeProposalWrapper.
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- [lineage_dataset_chart.py](../../metadata-ingestion/examples/library/lineage_dataset_chart.py) - emits the dataset-to-chart lineage via REST as MetadataChangeProposalWrapper.
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- [lineage_chart_dashboard.py](../../metadata-ingestion/examples/library/lineage_chart_dashboard.py) - emits the chart-to-dashboard lineage via REST as MetadataChangeProposalWrapper.
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- [lineage_job_dataflow.py](../../metadata-ingestion/examples/library/lineage_job_dataflow.py) - emits the job-to-dataflow lineage via REST as MetadataChangeProposalWrapper.
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- [lineage_emitter_rest.py](../../metadata-ingestion/examples/library/lineage_emitter_rest.py) - emits simple dataset-to-dataset lineage via REST as MetadataChangeEvent.
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- [lineage_emitter_kafka.py](../../metadata-ingestion/examples/library/lineage_emitter_kafka.py) - emits simple dataset-to-dataset lineage via Kafka as MetadataChangeEvent.
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- [Datahub Snowflake Lineage](https://github.com/linkedin/datahub/blob/master/metadata-ingestion/src/datahub/ingestion/source/sql/snowflake.py#L249) - emits Datahub's Snowflake lineage as MetadataChangeProposalWrapper.
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- [Datahub Bigquery Lineage](https://github.com/linkedin/datahub/blob/a1bf95307b040074c8d65ebb86b5eb177fdcd591/metadata-ingestion/src/datahub/ingestion/source/sql/bigquery.py#L229) - emits Datahub's Bigquery lineage as MetadataChangeProposalWrapper.
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- [Datahub Dbt Lineage](https://github.com/linkedin/datahub/blob/a9754ebe83b6b73bc2bfbf49d9ebf5dbd2ca5a8f/metadata-ingestion/src/datahub/ingestion/source/dbt.py#L625,L630) - emits Datahub's DBT lineage as MetadataChangeEvent.
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NOTE:
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- Emitting aspects as MetadataChangeProposalWrapper is recommended over emitting aspects via the
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MetadataChangeEvent.
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- Emitting any aspect associated with an entity completely overwrites the previous
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value of the aspect associated with the entity. This means that emitting a lineage aspect associated with a dataset will overwrite lineage edges that already exist. |