rdblue commented on a change in pull request #928: Add failure handling in
cleanup while reading snapshot manifest-list files
URL: https://github.com/apache/incubator-iceberg/pull/928#discussion_r409188087
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File path: core/src/main/java/org/apache/iceberg/RemoveSnapshots.java
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@@ -201,112 +201,121 @@ private void cleanExpiredFiles(List<Snapshot>
snapshots, Set<Long> validIds, Set
// find manifests to clean up that are still referenced by a valid
snapshot, but written by an expired snapshot
Set<String> validManifests = Sets.newHashSet();
Set<ManifestFile> manifestsToScan = Sets.newHashSet();
- for (Snapshot snapshot : snapshots) {
- try (CloseableIterable<ManifestFile> manifests =
readManifestFiles(snapshot)) {
- for (ManifestFile manifest : manifests) {
- validManifests.add(manifest.path());
-
- long snapshotId = manifest.snapshotId();
- // whether the manifest was created by a valid snapshot (true) or an
expired snapshot (false)
- boolean fromValidSnapshots = validIds.contains(snapshotId);
- // whether the snapshot that created the manifest was an ancestor of
the table state
- boolean isFromAncestor = ancestorIds.contains(snapshotId);
- // whether the changes in this snapshot have been picked into the
current table state
- boolean isPicked = pickedAncestorSnapshotIds.contains(snapshotId);
- // if the snapshot that wrote this manifest is no longer valid (has
expired), then delete its deleted files.
- // note that this is only for expired snapshots that are in the
current table state
- if (!fromValidSnapshots && (isFromAncestor || isPicked) &&
manifest.hasDeletedFiles()) {
- manifestsToScan.add(manifest.copy());
- }
- }
-
- } catch (IOException e) {
- throw new RuntimeIOException(e,
- "Failed to close manifest list: %s",
snapshot.manifestListLocation());
- }
- }
+ Tasks.foreach(snapshots).noRetry().suppressFailureWhenFinished()
+ .onFailure((snapshot, exc) -> LOG.warn("Failed on snapshot {} while
reading manifest list: {}",
Review comment:
This indentation seems a bit awkward to me because the arguments are
indented so much less than the `LOG.warn` call. What about moving `LOG.warn` to
the next line and indenting its arguments to make it obvious what the args are
passed to?
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