parthchandra commented on code in PR #682:
URL: https://github.com/apache/datafusion-comet/pull/682#discussion_r1683542512
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common/src/main/java/org/apache/comet/vector/CometVector.java:
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@@ -79,14 +79,23 @@ public Decimal getDecimal(int i, int precision, int scale) {
} else {
byte[] bytes = getBinaryDecimal(i);
BigInteger bigInteger = new BigInteger(bytes);
- BigDecimal javaDecimal = new BigDecimal(bigInteger, scale);
Review Comment:
True.
Looks like Decimal.apply(BigInteger) has a fairly expensive check to see how
many bits are in use and see of the value will fit into an integer/long but it
might be worthy it downstream.
Are you able to see a difference in the micro benchmark with useDecimal128
enabled?
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