conbench-apache-arrow[bot] commented on PR #39522:
URL: https://github.com/apache/arrow/pull/39522#issuecomment-1885088010

   After merging your PR, Conbench analyzed the 6 benchmarking runs that have 
been run so far on merge-commit 5acf67c48c3a1e73c6bebae32f299e09721dd1ad.
   
   There were 22 benchmark results indicating a performance regression:
   
   - Commit Run on `ursa-i9-9960x` at [2024-01-09 
23:17:32Z](https://conbench.ursa.dev/compare/runs/4e5d9a7870684e5db641aeed486f53d3...7995b8b009cf4b298d66a9de7ccb912f/)
     - [`file-read` (R) with compression=uncompressed, 
dataset=fanniemae_2016Q4, file_type=feather, language=R, 
output_type=dataframe](https://conbench.ursa.dev/compare/benchmarks/0659db78d52575128000161f28a57ee0...0659de23e929712a80008c96a5b21add)
     - [`tpch` (R) with engine=arrow, format=native, language=R, 
memory_map=False, query_id=TPCH-20, 
scale_factor=1](https://conbench.ursa.dev/compare/benchmarks/0659dc3a76237d388000913e78b1a95c...0659def4f52b740d8000ce4277ce29e0)
   - and 20 more (see the report linked below)
   
   The [full Conbench report](https://github.com/apache/arrow/runs/20349366830) 
has more details. It also includes information about 1 possible false positive 
for unstable benchmarks that are known to sometimes produce them.


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