Condition eliminate between scan and filter haven't applied on iceberg/delta
- Dominant language
- Scala
- Stars
- 1.6k
- Forks
- 657
- Avg merge
- 2d 21h
- Merged PRs (30d)
- 85
Description
### Backend
VL (Velox)
### Bug description
There is an optimization that eliminate common expression between scan and filter, but it doesn't apply on IcebergScanTransformer/DeltaScanTransformer as they are not inherited from BasicScanExecTransformer.
### Spark version
None
### Spark configurations
_No response_
### System information
_No response_
### Relevant logs
_No response_
Contributor guide
Research direction
Start by comparing IcebergScanTransformer and DeltaScanTransformer with BasicScanExecTransformer, then trace where the scan-and-filter common-expression elimination is applied. Reproduce the behavior with Iceberg and Delta scan/filter cases using the VL backend; done means the optimization applies to both transformers and is covered by relevant tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- scala
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100