TheR1sing3un commented on code in PR #13351:
URL: https://github.com/apache/hudi/pull/13351#discussion_r2106060707
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hudi-spark-datasource/hudi-spark-common/src/main/scala/org/apache/hudi/HoodieFileIndex.scala:
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@@ -172,7 +172,11 @@ case class HoodieFileIndex(spark: SparkSession,
* @return list of PartitionDirectory containing partition to base files
mapping
*/
override def listFiles(partitionFilters: Seq[Expression], dataFilters:
Seq[Expression]): Seq[PartitionDirectory] = {
- val prunedPartitionsAndFilteredFileSlices = filterFileSlices(dataFilters,
partitionFilters).map {
+ val prunedPartitionsAndFilteredFileSlices = filterFileSlices(dataFilters,
partitionFilters).flatMap(
+ { case (partitionOpt, fileSlices) =>
Review Comment:
> so now one `PartitionDirectory` only contains one file slice? makes sense
in general I think.
Yes, when this `PartitionDirectory` is used on the spark side, it only
shares the same `PartitionValue` for the `FileStatus` under
`PartitionDirectory`. Other than that, it seems to have no other usage.
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