mrdrivingduck commented on PR #205:
URL: https://github.com/apache/paimon-cpp/pull/205#issuecomment-5295628575

   Oh, here is a Paimon semantic-level benchmark supplement to the pure 
filesystem benchmark above. FYI.
   
   - `regular_wide_rg_64k`: regular append-only wide table with 64K-row Parquet 
row groups; used for first-batch, full, projected, and no-prebuffer scans.
   - `regular_wide_rg_1k`: the same style of table with 1K-row groups; used for 
the selective predicate scan.
   - `regular_wide_small_files`: regular table split into small data files.
   - `regular_partitioned`: partitioned regular table; used for partition and 
prefetch scans.
   
   | Scenario | OSS FS | Jindo FS | OSS/Jindo |
   |---|---:|---:|---:|
   | First batch | 121 ms | 114 ms | +6.1% |
   | Full scan | 232.7 ms | 257.8 ms | -9.7% |
   | Projected scan | 123.3 ms | 113.8 ms | +8.4% |
   | Predicate scan | 25 ms | 24 ms | +4.2% |
   | Small-files scan | 255.7 ms | 239.7 ms | +6.7% |
   | Partition scan | 65.3 ms | 64.4 ms | +1.4% |
   | Prefetch scan | 765 ms | 855 ms | -10.5% |
   | Scan without Parquet prebuffer | 489 ms | 485 ms | +0.8% |
   
   Overall, OSS FS and Jindo FS show broadly comparable performance under 
Paimon scan semantics. The observed differences are generally within a 
single-digit range and do not indicate a consistent performance disadvantage, 
but much more like noise.
   


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