goutamadwant opened a new pull request, #19180:
URL: https://github.com/apache/pinot/pull/19180
Closes #10458
## What this PR does
- Adds a dedicated `PUT
/segments/{tableNameWithType}/{segmentName}/metadata` API for updating the
segment ZK metadata custom map.
- Validates the expected segment CRC through `If-Match` and uses the ZK
record version for compare-and-set protection.
- Routes unchanged single-segment conversions through the metadata-only API,
avoiding segment compression and upload.
- Falls back to the existing refresh-only upload path when a mixed-version
controller does not expose the new endpoint.
## Backward compatibility
The endpoint is additive. Existing upload behavior is unchanged for modified
segments, and older controllers continue to work through the fallback path.
## Tests
- `PinotSegmentRestletResourceTest`
- `BaseSingleSegmentConversionExecutorTest`
- Pinot pre-commit checks for `pinot-common`, `pinot-controller`, and
`pinot-minion-builtin-tasks`
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