edgarRd commented on a change in pull request #2254:
URL: https://github.com/apache/iceberg/pull/2254#discussion_r584050196
##########
File path:
mr/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergFilterFactory.java
##########
@@ -172,15 +171,24 @@ private static BigDecimal
hiveDecimalToBigDecimal(HiveDecimalWritable hiveDecima
return
hiveDecimalWritable.getHiveDecimal().bigDecimalValue().setScale(hiveDecimalWritable.scale());
}
+ // Hive uses `java.sql.Date.valueOf(lit.toString());` to convert a literal
to Date
+ // Which uses `java.util.Date()` internally to create the object and that
uses the TimeZone.getDefaultRef()
+ // To get back the expected date we have to use the LocalDate which gets rid
of the TimeZone misery as it uses
+ // the year/month/day to generate the object
private static int daysFromDate(Date date) {
- return DateTimeUtil.daysFromInstant(Instant.ofEpochMilli(date.getTime()));
+ return DateTimeUtil.daysFromDate(date.toLocalDate());
}
+ // Hive uses `java.sql.Timestamp.valueOf(lit.toString());` to convert a
literal to Timestamp
+ // Which again uses `java.util.Date()` internally to create the object which
uses the TimeZone.getDefaultRef()
+ // To get back the expected timestamp we have to use the LocalDateTime which
gets rid of the TimeZone misery
+ // as it uses the year/month/day/hour/min/sec/nanos to generate the object
private static int daysFromTimestamp(Timestamp timestamp) {
- return DateTimeUtil.daysFromInstant(timestamp.toInstant());
+ return
DateTimeUtil.daysFromDate(timestamp.toLocalDateTime().toLocalDate());
}
+ // We have to use the LocalDateTime to get the micros. See the comment above.
private static long microsFromTimestamp(Timestamp timestamp) {
- return DateTimeUtil.microsFromInstant(timestamp.toInstant());
+ return DateTimeUtil.microsFromTimestamp(timestamp.toLocalDateTime());
Review comment:
I'm in PST, if you replace
https://github.com/apache/iceberg/blob/master/mr/src/test/java/org/apache/iceberg/mr/hive/TestHiveIcebergFilterFactory.java#L240-L242
for:
```
TimeZone defaultTz = TimeZone.getDefault();
try {
TimeZone.setDefault(TimeZone.getTimeZone("America/Los_Angeles"));
UnboundPredicate actual = (UnboundPredicate)
HiveIcebergFilterFactory.generateFilterExpression(arg);
assertPredicatesMatch(expected, actual);
} finally {
TimeZone.setDefault(defaultTz);
}
```
to set the TimeZone, you should be able to repro - conversely if I use
`"UTC"` instead of `"America/Los_Angeles"` the test pass.
I'm running the unit test out of the master branch, with:
```
./gradlew clean :iceberg-mr:test --tests
org.apache.iceberg.mr.hive.TestHiveIcebergFilterFactory
```
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