jychen7 opened a new pull request #2031: URL: https://github.com/apache/arrow-datafusion/pull/2031
# Which issue does this PR close? Closes https://github.com/apache/arrow-datafusion/issues/2004 # Rationale for this change In the scenario of low latency query OLAP system (e.g. Druid), one common way is to pre-aggregate sketches during ingestion time (e.g. Spark/Flink -> DataStore), then merge sketches in query time (e.g. DataStore -> Datafusion). # What changes are included in this PR? There are 12 files change, but most of them are standard ones. Would be easy to review by commits. The main change is improving `tdigest/mod.rs` and `approx_percentile_cont.rs` to share code usage to the new `appro_percentile_cont_with_weight.rs` # Are there any user-facing changes? NA -- 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]
