gengliangwang opened a new pull request #24571: [SPARK-27668][SQL] File source V2: support reporting statistics URL: https://github.com/apache/spark/pull/24571 ## What changes were proposed in this pull request? In File source V1, the statistics of `HadoopFsRelation` is `compressionFactor * sizeInBytesOfAllFiles`. To follow it, we can implement the interface SupportsReportStatistics in FileScan and report the same statistics. ## How was this patch tested? Unit test
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