pwrliang opened a new pull request, #784:
URL: https://github.com/apache/sedona-db/pull/784

   * This PR implements a `concat` method for `EvaluatedGeometryArray` to 
improve the concatenation performance, which will be used in 
`GpuSpatialIndexBuilder`, as documented in 
https://github.com/apache/sedona-db/issues/763
   
   The performance improvement is not very significant.
   
   
   
   ### SF1
   
   Query | Before Optimization | After Optimization | Optimization Speedup | 
Notes / Difference
   -- | -- | -- | -- | --
   Q2 | 0.4958 s | 0.4960 s | 1.00x | Virtually identical
   Q4 | 0.4113 s | 0.4337 s | 0.95x | ~5% slowdown
   Q6 | 0.7383 s | 0.7192 s | 1.03x | ~3% speedup
   Q9 | 0.0375 s | 0.0365 s | 1.03x | ~3% speedup
   Q10 | 1.9014 s | 1.9261 s | 0.99x | ~1% slowdown
   Q11 | 2.6833 s | 2.6299 s | 1.02x | ~2% speedup
   
   ### SF10
   
   Query | Before Optimization | After Optimization | Optimization Speedup | 
Notes / Difference
   -- | -- | -- | -- | --
   Q2 | 1.4816 s | 1.4858 s | 1.00x | Virtually identical
   Q4 | 1.0432 s | 1.0171 s | 1.03x | ~3% speedup
   Q6 | 2.0498 s | 2.0462 s | 1.00x | Virtually identical
   Q9 | 0.1420 s | 0.1429 s | 0.99x | ~1% slowdown
   Q10 | 5.1287 s | 5.0918 s | 1.01x | ~1% speedup
   Q11 | 11.5716 s | 10.9866 s | 1.05x | ~5% speedup
   
   
   * The PR also fixes a bug that prevents the reusing of `ParallelWKBLoader`.
   


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