beepupa commented on issue #10702: URL: https://github.com/apache/druid/issues/10702#issuecomment-750699167
> According to the [doc](https://github.com/apache/druid/blame/master/docs/querying/aggregations.md#L137), > > > (Double/Float/Long) First and Last aggregator cannot be used in ingestion spec, and should only be specified as part of queries. > > But the web console DOES allow users to configure a metric aggregated as double/float/long first/last. >  > > And from the current implementation of backend services, these aggregation are not supported. > > I checked the history of code, and didn't find the reasons why these aggregators are not supported during ingestion for rollup. > > Do you have more background information on this problem @gianm ? Thank you for answering my question ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
