[
https://issues.apache.org/jira/browse/HIVE-25268?focusedWorklogId=614324&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-614324
]
ASF GitHub Bot logged work on HIVE-25268:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 24/Jun/21 04:07
Start Date: 24/Jun/21 04:07
Worklog Time Spent: 10m
Work Description: guptanikhil007 commented on a change in pull request
#2409:
URL: https://github.com/apache/hive/pull/2409#discussion_r657609683
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFDateFormat.java
##########
@@ -106,25 +102,22 @@ public Object evaluate(DeferredObject[] arguments) throws
HiveException {
return null;
}
- ZoneId id = (SessionState.get() == null) ? new
HiveConf().getLocalTimeZone() : SessionState.get().getConf()
- .getLocalTimeZone();
// the function should support both short date and full timestamp format
// time part of the timestamp should not be skipped
Timestamp ts = getTimestampValue(arguments, 0, tsConverters);
+
if (ts == null) {
- Date d = getDateValue(arguments, 0, dtInputTypes, dtConverters);
- if (d == null) {
- return null;
- }
- ts = Timestamp.ofEpochMilli(d.toEpochMilli(id), id);
+ return null;
}
+ // We are doing an extra timestamp conversion from timeZone to UTC and
then UTC to timeZone to maintain the
+ // same zone format semantics as that of SimpleDateFormat for some
specific locale. E.g. PST/PDT, CST
+ // If this conversion is not there PDT -> PT and CST -> CT
Review comment:
removed ts2
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Issue Time Tracking
-------------------
Worklog Id: (was: 614324)
Time Spent: 7h 40m (was: 7.5h)
> date_format udf doesn't work for dates prior to 1900 if the timezone is
> different from UTC
> ------------------------------------------------------------------------------------------
>
> Key: HIVE-25268
> URL: https://issues.apache.org/jira/browse/HIVE-25268
> Project: Hive
> Issue Type: Bug
> Components: UDF
> Affects Versions: 3.1.0, 3.1.1, 3.1.2, 4.0.0
> Reporter: Nikhil Gupta
> Assignee: Nikhil Gupta
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 7h 40m
> Remaining Estimate: 0h
>
> *Hive 1.2.1*:
> {code:java}
> select date_format('1400-01-14 01:00:00', 'yyyy-MM-dd HH:mm:ss z');
> +--------------------------+--+
> | _c0 |
> +--------------------------+--+
> | 1400-01-14 01:00:00 ICT |
> +--------------------------+--+
> select date_format('1800-01-14 01:00:00', 'yyyy-MM-dd HH:mm:ss z');
> +--------------------------+--+
> | _c0 |
> +--------------------------+--+
> | 1800-01-14 01:00:00 ICT |
> +--------------------------+--+
> {code}
> *Hive 3.1, Hive 4.0:*
> {code:java}
> select date_format('1400-01-14 01:00:00', 'yyyy-MM-dd HH:mm:ss z');
> +--------------------------+
> | _c0 |
> +--------------------------+
> | 1400-01-06 01:17:56 ICT |
> +--------------------------+
> select date_format('1800-01-14 01:00:00', 'yyyy-MM-dd HH:mm:ss z');
> +--------------------------+
> | _c0 |
> +--------------------------+
> | 1800-01-14 01:17:56 ICT |
> +--------------------------+
> {code}
> VM timezone is set to 'Asia/Bangkok'
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