Improve scan perf by re-enable prefetching in ScanNode #473
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rust/benches/scan.rs
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| // specific language governing permissions and limitations | |||
| // under the License. | |||
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| //! Before running the dataset, prepare a "test.lance" dataset, in the | |||
| //! `lance/rust` directly. There is no limitation in the dataset size, | |||
| @@ -15,6 +15,17 @@ | |||
| // specific language governing permissions and limitations | |||
| // under the License. | |||
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| //! Before running the dataset, prepare a "test.lance" dataset, in the | |||
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how to prepare though? python? rust script?
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You should use either python/rust to generate the dataset. It is also a good test for guaranteeing compatibility between implementations.
So full scan of the highly nested dataset, now it is 3-4x faster than previous, and it is about 2x than the C++ implementation. |
It starts to return batch unordered due to prefetch. need to change the test , working on it. |
changhiskhan
approved these changes
Jan 27, 2023
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