Gengliang Wang created SPARK-27049:
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Summary: Support handling partition values in the abstraction of
file source V2
Key: SPARK-27049
URL: https://issues.apache.org/jira/browse/SPARK-27049
Project: Spark
Issue Type: Task
Components: SQL
Affects Versions: 3.0.0
Reporter: Gengliang Wang
In FileFormat, the method buildReaderWithPartitionValues appends the partition
values to the end of the result of buildReader, so that for data sources like
CSV/JSON/AVRO only need to implement buildReader to read a single file without
taking care of partition values.
This PR proposes to support handling partition values in file source v2
abstraction by
1. Have two methods `buildReader` and `buildReaderWithPartitionValues` in
FilePartitionReaderFactory, which have exactly the same meaning as they are in
`FileFormat`
2. Rename `buildColumnarReader` as `buildColumnarReaderWithPartitionValues` to
make the naming consistent.
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