danny0405 commented on code in PR #13653:
URL: https://github.com/apache/hudi/pull/13653#discussion_r2249090670
##########
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/table/action/savepoint/SavepointHelpers.java:
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@@ -66,4 +72,28 @@ public static void validateSavepointPresence(HoodieTable
table, String savepoint
throw new HoodieRollbackException("No savepoint for instantTime " +
savepointTime);
}
}
+
+ private static class SavepointInstantComparator implements
Comparator<HoodieInstant> {
+ private final boolean tableVersion8OrLater;
+ private final InstantComparator instantComparator;
+
+ public SavepointInstantComparator(boolean tableVersion8OrLater,
InstantComparator instantComparator) {
+ this.tableVersion8OrLater = tableVersion8OrLater;
+ this.instantComparator = instantComparator;
+ }
+
+ @Override
+ public int compare(HoodieInstant o1, HoodieInstant o2) {
+ if (tableVersion8OrLater) {
+ return instantComparator.completionTimeOrderedComparator().compare(o1,
o2);
+ } else {
+ // Do to special handling of compaction instants, we need to use
requested time based comparator for compaction instants but completion time
based comparator for others
+ if (o1.getAction().equals(HoodieTimeline.COMMIT_ACTION) ||
o2.getAction().equals(HoodieTimeline.COMMIT_ACTION)) {
Review Comment:
> The slice would just use t1 as the base and the log files would all be
present preventing data loss.
This is true, the data loss comes from the deleted base file which contains
all the history dataset.
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