alamb opened a new pull request, #7461: URL: https://github.com/apache/arrow-rs/pull/7461
# Which issue does this PR close? <!-- We generally require a GitHub issue to be filed for all bug fixes and enhancements and this helps us generate change logs for our releases. You can link an issue to this PR using the GitHub syntax. For example `Closes #123` indicates that this PR will close issue #123. --> - Closes https://github.com/apache/arrow-rs/issues/7460 # Rationale for this change We would like a benchmark that accurately reflects the predicate patterns we see in ClickBench. See full analysis here https://github.com/apache/arrow-rs/issues/7460#issuecomment-2843142141 ClickHouse Data in `hits.parquet`: * Selectivity is: `13172392` / `99997497` = `0.132` * Number of `RowSelections` = `14054784` * Average run length of each `RowSelection`: `99997497` / `14054784` = `7.114` Data in the arrow_reader_row_filter benchmark: * Selectivity is: `80147` / `100000` = `0.8` * Number of RowSelections = `67989` * Average run length of each RowSelection: `100000 / 32010` = `3.1` # What changes are included in this PR? Change distribution of the string view so it is much closer to parquet data (the selectivity especially) * Selectivity is: `15144` / `100000` = `0.15144` * Number of RowSelections = `12904` * Average run length of each RowSelection: `100000` / `12904` = 7.75 # Are there any user-facing changes? No, this is a benchmark only -- 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: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
