yihua commented on code in PR #11580:
URL: https://github.com/apache/hudi/pull/11580#discussion_r1696040125


##########
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/table/action/rollback/BaseRollbackPlanActionExecutor.java:
##########
@@ -113,6 +113,7 @@ protected Option<HoodieRollbackPlan> requestRollback(String 
startRollbackTime) {
       HoodieRollbackPlan rollbackPlan = new HoodieRollbackPlan(new 
HoodieInstantInfo(instantToRollback.getTimestamp(),
           instantToRollback.getAction()), rollbackRequests, 
LATEST_ROLLBACK_PLAN_VERSION);
       if (!skipTimelinePublish) {
+        table.validateForLatestTimestamp(rollbackInstant.getTimestamp());

Review Comment:
   I think we should guarantee monotonically increasing instant time generation 
on the timeline on storage as @danny0405 mentioned.  Adding per-action handling 
for the same guarantee is unmaintainable.



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