samarthjain commented on issue #8082: DumpSegment tool does not resolve type id 'quantilesDoublesSketchMerge' URL: https://github.com/apache/incubator-druid/issues/8082#issuecomment-512609900 I ran into this issue too. The core reason is that various aggregators including quantilesDoubleSketch are not added in the AggregatorsModule. https://github.com/apache/incubator-druid/blob/master/processing/src/main/java/org/apache/druid/jackson/AggregatorsModule.java#L85 Unfortunately, such extension aggregators cannot be added to this file since that would result in a circular dependency between druid-processing and the extension modules. @jihoonson or @gianm - any insights on how to fix this. Also, @quenlang, this is logged as a warning and shouldn't cause the process to fail. Was the segment not usable because of this?
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