Liya Fan created ARROW-7019: ------------------------------- Summary: [Java] Improve the performance of loading validity buffers Key: ARROW-7019 URL: https://issues.apache.org/jira/browse/ARROW-7019 Project: Apache Arrow Issue Type: Improvement Components: Java Reporter: Liya Fan Assignee: Liya Fan
At the receiver side of flighting, loading validity buffer is an important operation, as each vector has a validity buffer. For non-nullable vectors, the current implementation of loading the validity buffer is inefficient. We improve the performance of this operation by efficiently setting the bits of a memory region to 1. Benchmark results show that the changes leads to a 35% performance improvement: Before: BitVectorHelperBenchmarks.loadValidityBufferAllOne avgt 5 748.916 ± 23.290 ns/op After: BitVectorHelperBenchmarks.loadValidityBufferAllOne avgt 5 487.352 ± 15.046 ns/op -- This message was sent by Atlassian Jira (v8.3.4#803005)