kfaraz commented on code in PR #16667:
URL: https://github.com/apache/druid/pull/16667#discussion_r1673865277
##########
server/src/main/java/org/apache/druid/indexing/overlord/IndexerMetadataStorageCoordinator.java:
##########
@@ -473,4 +473,22 @@ SegmentPublishResult commitMetadataOnly(
* @return List of pending segment records
*/
List<PendingSegmentRecord> getPendingSegments(String datasource, Interval
interval);
+
+ /**
+ * Map from a segment ID to the segment ID from which it was upgraded
+ * There should be no entry in the map for an original non-upgraded segment
+ * @param dataSource data source
+ * @param segmentIds ids of segments
+ * @return map from child id to parent id
+ */
+ Map<String, String> retrieveUpgradedFromSegmentIds(String dataSource,
Set<String> segmentIds);
+
+ /**
+ * Map from a segment ID to a set containing
+ * all segment IDs that were upgraded from it AND are still present in the
metadata store
+ * @param dataSource data source
+ * @param segmentIds ids of the first segments which had the corresponding
load spec
+ * @return map from parent id to set of all its children
Review Comment:
Not needed.
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