rdblue commented on a change in pull request #487: Add TIME_MICROS support to
GenericParquetReaders
URL: https://github.com/apache/incubator-iceberg/pull/487#discussion_r326826386
##########
File path:
data/src/main/java/org/apache/iceberg/data/parquet/GenericParquetReaders.java
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@@ -366,6 +365,15 @@ public OffsetDateTime read(OffsetDateTime reuse) {
}
}
+ private static class TimeReader extends PrimitiveReader<LocalTime> {
+ private TimeReader(ColumnDescriptor desc) {
+ super(desc);
+ }
+
+ @Override
+ public LocalTime read(LocalTime reuse) { return
LocalTime.MIN.plus(column.nextLong(), ChronoUnit.MICROS); }
Review comment:
In other places, we use `LocalTime.ofNanoOfDay(decoder.readLong() * 1000L)`,
so I'm not sure that this implementation is correct.
Could you write a test that validates the conversion from microseconds to a
time value? You can convert a time string to a microseconds value using
`Literals.of("10:11:12.131415").to(TimeType.get()).value()`.
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