shnapz opened a new pull request, #37265:
URL: https://github.com/apache/beam/pull/37265
This PR adds source lineage reporting to `HadoopFormatIO` for file-based
sources.
## Background
While `FileBasedSource` already reports source lineage metrics,
`HadoopFormatIO` did not. `HadoopFormatIO` is a more generic IO transform that
supports various data sources including databases, NoSQL stores, and file
systems through Hadoop's `InputFormat`/`OutputFormat` interfaces.
## Changes
- **Added lineage reporting to HadoopFormatIO**: Implements source lineage
reporting for file-based splits (when `InputSplit` is an instance of
`FileSplit`)
- **Refactored shared logic**: Extracted common lineage reporting logic
into `FileSystems.reportSourceLineage(List<ResourceId>)` to reduce code
duplication
- **Updated FileBasedSource**: Refactored to use the new shared utility
method
## Implementation Details
The implementation reports lineage only for file-based sources detected
via `FileSplit` instances. Non-file sources (e.g., database reads via
`DBInputFormat`) are intentionally excluded as they don't represent file
resources.
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