prashantwason commented on code in PR #8837: URL: https://github.com/apache/hudi/pull/8837#discussion_r1213476749
########## hudi-client/hudi-client-common/src/main/java/org/apache/hudi/metadata/HoodieBackedTableMetadataWriter.java: ########## @@ -851,26 +919,49 @@ public void update(HoodieRestoreMetadata restoreMetadata, String instantTime) { */ @Override public void update(HoodieRollbackMetadata rollbackMetadata, String instantTime) { - if (enabled && metadata != null) { - // Is this rollback of an instant that has been synced to the metadata table? - String rollbackInstant = rollbackMetadata.getCommitsRollback().get(0); - boolean wasSynced = metadataMetaClient.getActiveTimeline().containsInstant(new HoodieInstant(false, HoodieTimeline.DELTA_COMMIT_ACTION, rollbackInstant)); - if (!wasSynced) { - // A compaction may have taken place on metadata table which would have included this instant being rolled back. - // Revisit this logic to relax the compaction fencing : https://issues.apache.org/jira/browse/HUDI-2458 - Option<String> latestCompaction = metadata.getLatestCompactionTime(); - if (latestCompaction.isPresent()) { - wasSynced = HoodieTimeline.compareTimestamps(rollbackInstant, HoodieTimeline.LESSER_THAN_OR_EQUALS, latestCompaction.get()); - } + // The commit which is being rolled back on the dataset + final String commitInstantTime = rollbackMetadata.getCommitsRollback().get(0); + // Find the deltacommits since the last compaction + Option<Pair<HoodieTimeline, HoodieInstant>> deltaCommitsInfo = + CompactionUtils.getDeltaCommitsSinceLatestCompaction(metadataMetaClient.getActiveTimeline()); + if (!deltaCommitsInfo.isPresent()) { + LOG.info(String.format("Ignoring rollback of instant %s at %s since there are no deltacommits on MDT", commitInstantTime, instantTime)); + return; + } + + // This could be a compaction or deltacommit instant (See CompactionUtils.getDeltaCommitsSinceLatestCompaction) + HoodieInstant compactionInstant = deltaCommitsInfo.get().getValue(); + HoodieTimeline deltacommitsSinceCompaction = deltaCommitsInfo.get().getKey(); + + // The deltacommit that will be rolled back + HoodieInstant deltaCommitInstant = new HoodieInstant(false, HoodieTimeline.DELTA_COMMIT_ACTION, commitInstantTime); + + // The commit being rolled back should not be older than the latest compaction on the MDT. Compaction on MDT only occurs when all actions + // are completed on the dataset. Hence, this case implies a rollback of completed commit which should actually be handled using restore. + if (compactionInstant.getAction().equals(HoodieTimeline.COMMIT_ACTION)) { Review Comment: CompactionUtils.getDeltaCommitsSinceLatestCompaction returns a Pair. The value in that Pair can be either a DeltaCommit instant (if no compactions happened) or a Commit action (if a compaction was found). We only want to check for the compaction here. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@hudi.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org