zhuqi-lucas commented on PR #19064:
URL: https://github.com/apache/datafusion/pull/19064#issuecomment-3650009386

   > 🤔 Looks like it may slow planning down
   
   It looks like not accurate 🤔
   
   For example, the first time run:
   
   https://github.com/apache/datafusion/pull/19064#issuecomment-3648323418
   
   ```rust
   physical_plan_clickbench_q21                          1.00      2.9±0.03ms   
     ? ?/sec    1.00      2.9±0.05ms        ? ?/sec
   physical_plan_clickbench_q22                          1.00      3.6±0.06ms   
     ? ?/sec    1.02      3.6±0.14ms        ? ?/sec
   physical_plan_clickbench_q23                          1.00      3.8±0.06ms   
     ? ?/sec    1.01      3.9±0.07ms        ? ?/sec
   physical_plan_clickbench_q24                          1.00      5.0±0.07ms   
     ? ?/sec    1.01      5.0±0.12ms        ? ?/sec
   physical_plan_clickbench_q25                          1.00      3.1±0.05ms   
     ? ?/sec    1.01      3.1±0.06ms        ? ?/sec
   physical_plan_clickbench_q26                          1.00      2.9±0.05ms   
     ? ?/sec    1.01      2.9±0.05ms        ? ?/sec
   physical_plan_clickbench_q27                          1.00      3.1±0.05ms   
     ? ?/sec    1.01      3.1±0.10ms        ? ?/sec
   physical_plan_clickbench_q28                          1.00      4.0±0.07ms   
     ? ?/sec    1.02      4.1±0.11ms        ? ?/sec
   physical_plan_clickbench_q29                          1.00      4.3±0.07ms   
     ? ?/sec    1.04      4.5±0.15ms        ? ?/sec
   ```
   
   The second time run:
   ```rust
   physical_plan_clickbench_q21                          1.02      3.0±0.05ms   
     ? ?/sec    1.00      2.9±0.07ms        ? ?/sec
   physical_plan_clickbench_q22                          1.02      3.6±0.07ms   
     ? ?/sec    1.00      3.5±0.05ms        ? ?/sec
   physical_plan_clickbench_q23                          1.00      3.9±0.10ms   
     ? ?/sec    1.03      4.0±0.30ms        ? ?/sec
   physical_plan_clickbench_q24                          1.04      5.2±0.17ms   
     ? ?/sec    1.00      5.0±0.06ms        ? ?/sec
   physical_plan_clickbench_q25                          1.02      3.1±0.08ms   
     ? ?/sec    1.00      3.1±0.06ms        ? ?/sec
   physical_plan_clickbench_q26                          1.02      2.9±0.06ms   
     ? ?/sec    1.00      2.8±0.03ms        ? ?/sec
   physical_plan_clickbench_q27                          1.02      3.1±0.07ms   
     ? ?/sec    1.00      3.1±0.06ms        ? ?/sec
   physical_plan_clickbench_q28                          1.02      4.1±0.09ms   
     ? ?/sec    1.00      4.0±0.09ms        ? ?/sec
   physical_plan_clickbench_q29                          1.05      4.5±0.18ms   
     ? ?/sec    1.00      4.3±0.07ms        ? ?/sec
   ```
   
   The latest run:
   
   ```rust
   physical_plan_clickbench_q21                          1.20      3.5±0.08ms   
     ? ?/sec    1.00      2.9±0.04ms        ? ?/sec
   physical_plan_clickbench_q22                          1.17      4.3±0.07ms   
     ? ?/sec    1.00      3.7±0.08ms        ? ?/sec
   physical_plan_clickbench_q23                          1.20      4.6±0.08ms   
     ? ?/sec    1.00      3.8±0.05ms        ? ?/sec
   physical_plan_clickbench_q24                          1.17      5.7±0.06ms   
     ? ?/sec    1.00      4.9±0.07ms        ? ?/sec
   physical_plan_clickbench_q25                          1.16      3.7±0.09ms   
     ? ?/sec    1.00      3.2±0.16ms        ? ?/sec
   physical_plan_clickbench_q26                          1.20      3.4±0.09ms   
     ? ?/sec    1.00      2.9±0.11ms        ? ?/sec
   physical_plan_clickbench_q27                          1.17      3.7±0.08ms   
     ? ?/sec    1.00      3.2±0.13ms        ? ?/sec
   physical_plan_clickbench_q28                          1.20      4.8±0.06ms   
     ? ?/sec    1.00      4.0±0.05ms        ? ?/sec
   physical_plan_clickbench_q29                          1.20      5.2±0.09ms   
     ? ?/sec    1.00      4.3±0.11ms        ? ?/sec
   ```
   
   


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