ajantha-bhat commented on code in PR #6090:
URL: https://github.com/apache/iceberg/pull/6090#discussion_r1013964398
##########
core/src/main/java/org/apache/iceberg/FileCleanupStrategy.java:
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@@ -79,4 +80,15 @@ 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, Set<Long> expiredIds) {
+ Set<String> expiredStatisticsFilesLocations = Sets.newHashSet();
+ for (StatisticsFile statisticsFile : beforeExpiration.statisticsFiles()) {
+ if (expiredIds.contains(statisticsFile.snapshotId())) {
+ expiredStatisticsFilesLocations.add(statisticsFile.path());
Review Comment:
> The spec allows one Puffin file to be attached to multiple snapshots. For
example, rewrite_files / optimize will produce a new snapshot, but could carry
forward some/all table-level stats.
So, the fact that the snapshot is being forgotten doesn't imply the stats
file can be safely deleted.
makes sense. I will compute live statistics file set and then check whether
it can be safely deleted along with the current changes.
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