Gengliang Wang created SPARK-30627:
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Summary: Disable all the V2 file sources in Spark 3.0 by default
Key: SPARK-30627
URL: https://issues.apache.org/jira/browse/SPARK-30627
Project: Spark
Issue Type: Sub-task
Components: SQL
Affects Versions: 3.0.0
Reporter: Gengliang Wang
Assignee: Gengliang Wang
There are still some missing parts in the file source V2 framework:
1. It doesn't support reporting file scan metrics such as
"numOutputRows"/"numFiles"/"fileSize" like `FileSourceScanExec`.
2. It doesn't support partition pruning with subqueries or dynamic partition
pruning.
As we are going to code freeze on Jan 31st, I suggest disabling all the V2 file
sources in Spark 3.0 by default.
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