rdblue commented on code in PR #6090:
URL: https://github.com/apache/iceberg/pull/6090#discussion_r1053474166
##########
core/src/main/java/org/apache/iceberg/FileCleanupStrategy.java:
##########
@@ -83,4 +85,25 @@ protected void deleteFiles(Set<String> pathsToDelete, String
fileType) {
(file, thrown) -> LOG.warn("Delete failed for {} file: {}",
fileType, file, thrown))
.run(deleteFunc::accept);
}
+
+ protected Set<String> expiredStatisticsFilesLocations(
+ TableMetadata beforeExpiration, TableMetadata afterExpiration) {
+ Set<String> statisticsFilesLocationBeforeExpiry =
allStatisticsFilesLocation(beforeExpiration);
+ Set<String> statisticsFilesLocationAfterExpiry =
allStatisticsFilesLocation(afterExpiration);
+
statisticsFilesLocationBeforeExpiry.removeAll(statisticsFilesLocationAfterExpiry);
+ return statisticsFilesLocationBeforeExpiry;
Review Comment:
I think it is a best practice to avoid mutating sets or returning mutable
sets. Can you use Guava's `Sets.difference` instead of `removeAll`? It would
also be better if the set returned by `allStatisticsFilesLocations` were
immutable.
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