rdblue commented on code in PR #5981:
URL: https://github.com/apache/iceberg/pull/5981#discussion_r996534013
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core/src/main/java/org/apache/iceberg/ReachableFileCleanup.java:
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@@ -84,19 +77,74 @@ public void cleanFiles(TableMetadata beforeExpiration,
TableMetadata afterExpira
deleteFiles(manifestListsToDelete, "manifest list");
}
- private Set<ManifestFile> readManifests(Set<Snapshot> snapshots) {
- Set<ManifestFile> manifestFiles = Sets.newHashSet();
- for (Snapshot snapshot : snapshots) {
- try (CloseableIterable<ManifestFile> manifestFilesForSnapshot =
readManifestFiles(snapshot)) {
- for (ManifestFile manifestFile : manifestFilesForSnapshot) {
- manifestFiles.add(manifestFile.copy());
- }
- } catch (IOException e) {
- throw new RuntimeIOException(
- e, "Failed to close manifest list: %s",
snapshot.manifestListLocation());
- }
+ // Returns the current set of manifests while pruning the manifests to delete
+ // If all candidate manifests are pruned the returned set of current
manifests will be empty
+ private Set<ManifestFile> findCurrentManifestsAndPruneCandidates(
Review Comment:
Actually, I think there's a concurrency bug here: you don't know whether the
set that was passed in is thread-safe so you shouldn't modify it. I have
another solution below to consider that also fixes this.
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