dongjoon-hyun commented on a change in pull request #743:
URL: https://github.com/apache/orc/pull/743#discussion_r689639185
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File path: java/core/src/java/org/apache/orc/impl/ConvertTreeReaderFactory.java
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@@ -962,7 +963,10 @@ public void setConvertVectorElement(int elementNum) throws
IOException {
seconds += 1;
nanos = 1_000_000_000 - nanos;
}
- HiveDecimal value = HiveDecimal.create(String.format("%d.%09d", seconds,
nanos));
+ BigDecimal secondsBd = new BigDecimal(seconds);
+ BigDecimal nanosBd = new BigDecimal(nanos).movePointLeft(9);
+ BigDecimal resultBd = (seconds >= 0L) ? secondsBd.add(nanosBd) :
secondsBd.subtract(nanosBd);
Review comment:
Do you have a test coverage for this negative second case? If we don't
have, could you make one please?
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