rkhachatryan commented on code in PR #18539:
URL: https://github.com/apache/flink/pull/18539#discussion_r856196969
##########
flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/Checkpoints.java:
##########
@@ -369,4 +373,37 @@ public static CheckpointStorage loadCheckpointStorage(
/** This class contains only static utility methods and is not meant to be
instantiated. */
private Checkpoints() {}
+
+ private static class ClaimModeCompletedStorageLocation
+ implements CompletedCheckpointStorageLocation {
+
+ private final CompletedCheckpointStorageLocation wrapped;
+
+ private
ClaimModeCompletedStorageLocation(CompletedCheckpointStorageLocation location) {
+ wrapped = location;
+ }
+
+ @Override
+ public String getExternalPointer() {
+ return wrapped.getExternalPointer();
+ }
+
+ @Override
+ public StreamStateHandle getMetadataHandle() {
+ return wrapped.getMetadataHandle();
+ }
+
+ @Override
+ public void disposeStorageLocation() throws IOException {
+ try {
+ wrapped.disposeStorageLocation();
+ } catch (Exception ex) {
+ LOG.debug(
+ "We could not delete the storage location: {} in CLAIM
restore mode. It is"
+ + " most probably because of shared files
still being used by newer"
+ + " checkpoints",
Review Comment:
@dawidwys could you please explain this scenario?
AFAIK, shared state files should be placed in a separate
`checkpoints/shared` folder and therefore should not prevent
`checkpoints/chk-xxx` folder from being deleted.
However, this is not true when migrating to Changelog, when private state
becomes "re-usable".
I'd like to understand whether it's a general case or only related to
Changelog.
cc: @zoltar9264
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