damnMeddlingKid opened a new issue #10553: URL: https://github.com/apache/druid/issues/10553
### Affected Version tested on Druid v0.19 ### Description According to the [documentation](https://druid.apache.org/docs/latest/tutorials/tutorial-compaction.html#compact-the-data-with-new-segment-granularity) using a compaction task to change the segment granularity of data will mark the old segments as unused. While testing this out I've noticed that segments don't get marked as unused when converting a higher segment granularity (Month) to a lower segment granularity (Day). Steps to reproduce: 1) create a datasource with some data at a monthly granularity 2) run a compaction task like ``` { "type": "compact", "dataSource": "your_datasource", "interval": "2020-10-01T00:00:00.000Z/P1M", "segmentGranularity": "DAY" } ``` 3) query the metadata store using ``` select start, used, datasource from druid_segments where datasource='your_datasource'; ``` expected: segments that start on the month are marked as used=false actual: all segments have used=true ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
