jihoonson commented on issue #7949: KIS: potential data overriding when taskDuration is set URL: https://github.com/apache/incubator-druid/issues/7949#issuecomment-505206450 Good to hear that this is not a real issue. In KIS, the overlord is responsible for allocating segments and it chooses the segment version as below: 1) If this is the first segment for the given interval, it chooses the lock version as the segment version. 2) If there are existing segments in the given interval, it chooses the max version of existing segments as the version of the new segment. This is implemented here: https://github.com/apache/incubator-druid/blob/master/server/src/main/java/org/apache/druid/metadata/IndexerSQLMetadataStorageCoordinator.java#L613-L713
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