Kashif Faraz 352902156a

Fix mark segment unused when overshadowed by zero replica segment (#16181) ...

Bug:
In the `MarkOvershadowedSegmentsAsUnused` duty, the coordinator marks a segment
as unused if it is overshadowed by a segment currently being served by a historical or broker.
But it is possible to have segments that are eligible for a load rule but require zero replicas
to be loaded. (Such segments can be queried only using the MSQ engine).
If such a zero-replica segment overshadows any other segment, the overshadowed segment will
never be marked as unused and will continue to exist in the metadata store as a dangling segment.

Fix:
- In a coordinator run, keep track of segments that are eligible for a load rule but require zero replicas
- Allow the zero-replicas segments to overshadow old segments and hence mark the latter as unused

Other changes:
- Add simulation test to verify new behaviour. This test fails with the current code.
- Clean up javadocs

2024-03-21 12:56:59 +05:30

..

src

Fix mark segment unused when overshadowed by zero replica segment (#16181)

2024-03-21 12:56:59 +05:30

pom.xml

Update Calcite*Test to use junit5 (#16106)

2024-03-19 04:05:12 -07:00