vrozov commented on code in PR #5868:
URL: https://github.com/apache/hive/pull/5868#discussion_r2165063716
##########
ql/src/java/org/apache/hadoop/hive/ql/io/BatchToRowReader.java:
##########
@@ -518,7 +521,8 @@ public static TimestampWritableV2
nextTimestamp(ColumnVector vector,
result = (TimestampWritableV2) previous;
}
TimestampColumnVector tcv = (TimestampColumnVector) vector;
- result.setInternal(tcv.time[row], tcv.nanos[row]);
+ result.set(Timestamp.ofEpochSecond(Math.floorDiv(tcv.time[row], 1000L),
tcv.nanos[row],
+ tcv.isUTC() ? ZoneOffset.UTC : ZoneId.systemDefault()));
Review Comment:
> the way you pass the UTC flag is hacky and not scalable for future use.
updated the diff with all the changes, please take a look
The PR uses `TimestampColumnVector` existing `isUTC` flag. It does not
introduce any new flags. The bug is that Hive currently ignores that flag
(incorrectly) and always assumes that it is `true` even when it is `false`. The
proper long term solution is to use the existing flag and initialize it
correctly, IMO. I think that introducing a parallel flag is not the right long
term solution.
Please also see https://github.com/apache/orc/pull/2300
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