danielcweeks commented on code in PR #11906:
URL: https://github.com/apache/iceberg/pull/11906#discussion_r1920907162
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spark/v3.5/spark/src/main/java/org/apache/iceberg/spark/actions/DeleteOrphanFilesSparkAction.java:
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@@ -292,19 +294,49 @@ private Dataset<FileURI> validFileIdentDS() {
private Dataset<FileURI> actualFileIdentDS() {
StringToFileURI toFileURI = new StringToFileURI(equalSchemes,
equalAuthorities);
+ Dataset<String> dataList;
if (compareToFileList == null) {
- return toFileURI.apply(listedFileDS());
+ dataList =
+ table.io() instanceof SupportsPrefixOperations ? listWithPrefix() :
listWithoutPrefix();
} else {
- return toFileURI.apply(filteredCompareToFileList());
+ dataList = filteredCompareToFileList();
}
+
+ return toFileURI.apply(dataList);
+ }
+
+ @VisibleForTesting
+ Dataset<String> listWithPrefix() {
Review Comment:
For example, with the new object store layout, you would be able to use a
binary representation for the first three characters (on task for each prefix
000 to 111) and then have separate tasks for anything above and below the
binary characters and then distribute that processing.
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