epgif commented on code in PR #9008:
URL: https://github.com/apache/iceberg/pull/9008#discussion_r1629896432
##########
api/src/main/java/org/apache/iceberg/util/DateTimeUtil.java:
##########
@@ -185,7 +194,28 @@ private static int convertMicros(long micros, ChronoUnit
granularity) {
}
}
+ public static long convertNanos(long nanos, ChronoUnit granularity) {
+ if (nanos >= 0) {
+ long epochSecond = Math.floorDiv(nanos, NANOS_PER_SECOND);
+ long nanoAdjustment = Math.floorMod(nanos, NANOS_PER_SECOND);
+ return granularity.between(EPOCH, toOffsetDateTime(epochSecond,
nanoAdjustment));
+ } else {
+ // add 1 nano to the value to account for the case where there is
exactly 1 unit between
+ // the timestamp and epoch because the result will always be decremented.
+ long epochSecond = Math.floorDiv(nanos, NANOS_PER_SECOND);
Review Comment:
done
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