techdocsmith commented on code in PR #13088: URL: https://github.com/apache/druid/pull/13088#discussion_r972529744
########## docs/development/extensions-core/datasketches-hll.md: ########## @@ -59,6 +59,11 @@ druid.extensions.loadList=["druid-datasketches"] } ``` +The `HLLSketchBuild` aggregator builds a datasketch from the input column specified. If used during ingestion, this +will result in Druid storing pre-generated HLL Sketch objects in the datasource, rather than the original value itself. +If used at query time on an existing dimension, the resulting column can be used as an intermediate dimension by the +post-aggregators below. + Review Comment: ```suggestion The `HLLSketchBuild` aggregator builds an HLL sketch object from the specified input column. When used during ingestion, Druid stores pre-generated HLL sketch objects in the datasource instead of the original values. When applied at query time on an existing dimension, you can use the resulting column as an intermediate dimension by the [post-aggregators](#post-aggregators). ``` Thanks for the clarification/ contribution @cloventt ! I've suggest some stylistic changes. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
