Ji Liu created FLINK-12349:
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Summary: [Java] Improve performance of
BaseValueVector#getValidityBufferSizeFromCount
Key: FLINK-12349
URL: https://issues.apache.org/jira/browse/FLINK-12349
Project: Flink
Issue Type: Improvement
Reporter: Ji Liu
Assignee: Ji Liu
Now in _BaseValueVector#getValidityBufferSizeFromCount_ andÂ
_BitVectorHelper#getValidityBufferSize_, it uses _Math.ceil_ to calculate size
which is not efficient (lots of unnecessary logic in _StrictMath#floorOrCeil_)
since the value count is always not less than 0, we could simply replace
Math.ceil with the following code:
_return valueCount % 8 > 0 ? valueCount / 8 + 1 : valueCount / 8;_
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