[
https://issues.apache.org/jira/browse/HIVE-25093?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ashish Sharma updated HIVE-25093:
---------------------------------
Description:
*HIVE - 1.2*
sshuser@hn0-dateti:~$ *timedatectl*
Local time: Thu 2021-05-06 11:56:08 IST
Universal time: Thu 2021-05-06 06:26:08 UTC
RTC time: Thu 2021-05-06 06:26:08
Time zone: Asia/Kolkata (IST, +0530)
Network time on: yes
NTP synchronized: yes
RTC in local TZ: no
sshuser@hn0-dateti:~$ beeline
0: jdbc:hive2://localhost:10001/default> *select
date_format(current_timestamp,"yyyy-MM-dd HH:mm:ss.SSS z");*
+------------------------------+--+
| _c0 |
+------------------------------+--+
| 2021-05-06 11:58:53.760 IST |
+------------------------------+--+
1 row selected (1.271 seconds)
*HIVE - 3.1.0*
sshuser@hn0-testja:~$ *timedatectl*
Local time: Thu 2021-05-06 12:03:32 IST
Universal time: Thu 2021-05-06 06:33:32 UTC
RTC time: Thu 2021-05-06 06:33:32
Time zone: Asia/Kolkata (IST, +0530)
Network time on: yes
NTP synchronized: yes
RTC in local TZ: no
sshuser@hn0-testja:~$ beeline
0: jdbc:hive2://zk0-testja.e0mrrixnyxde5h1suy> *select
date_format(current_timestamp,"yyyy-MM-dd HH:mm:ss.SSS z");*
+------------------------------+
| _c0 |
+------------------------------+
| *2021-05-06 06:33:59.078 UTC* |
+------------------------------+
1 row selected (13.396 seconds)
0: jdbc:hive2://zk0-testja.e0mrrixnyxde5h1suy> *set
hive.local.time.zone=Asia/Kolkata;*
No rows affected (0.025 seconds)
0: jdbc:hive2://zk0-testja.e0mrrixnyxde5h1suy> *select
date_format(current_timestamp,"yyyy-MM-dd HH:mm:ss.SSS z");*
+------------------------------+
| _c0 |
+------------------------------+
| *{color:red}2021-05-06 12:08:15.118 UTC{color}* |
+------------------------------+
1 row selected (1.074 seconds)
expected result was *2021-05-06 12:08:15.118 IST*
As part of HIVE-12192 it was decided to have a common time zone for all
computation i.e. "UTC". Due to which data_format() function was hard coded to
"UTC".
But later in HIVE-21039 it was decided that user session time zone value should
be the default not UTC.
date_format() was not fixed as part of HIVE-21039.
what should be the ideal time zone value of date_format().
was:
*HIVE - 1.2*
sshuser@hn0-dateti:~$ *timedatectl*
Local time: Thu 2021-05-06 11:56:08 IST
Universal time: Thu 2021-05-06 06:26:08 UTC
RTC time: Thu 2021-05-06 06:26:08
Time zone: Asia/Kolkata (IST, +0530)
Network time on: yes
NTP synchronized: yes
RTC in local TZ: no
sshuser@hn0-dateti:~$ beeline
0: jdbc:hive2://localhost:10001/default> *select
date_format(current_timestamp,"yyyy-MM-dd HH:mm:ss.SSS z");*
+------------------------------+--+
| _c0 |
+------------------------------+--+
| 2021-05-06 11:58:53.760 IST |
+------------------------------+--+
1 row selected (1.271 seconds)
*HIVE - 3.1.0*
sshuser@hn0-testja:~$ *timedatectl*
Local time: Thu 2021-05-06 12:03:32 IST
Universal time: Thu 2021-05-06 06:33:32 UTC
RTC time: Thu 2021-05-06 06:33:32
Time zone: Asia/Kolkata (IST, +0530)
Network time on: yes
NTP synchronized: yes
RTC in local TZ: no
sshuser@hn0-testja:~$ beeline
0: jdbc:hive2://zk0-testja.e0mrrixnyxde5h1suy> *select
date_format(current_timestamp,"yyyy-MM-dd HH:mm:ss.SSS z");*
+------------------------------+
| _c0 |
+------------------------------+
| *2021-05-06 06:33:59.078 UTC* |
+------------------------------+
1 row selected (13.396 seconds)
0: jdbc:hive2://zk0-testja.e0mrrixnyxde5h1suy> *set
hive.local.time.zone=Asia/Kolkata;*
No rows affected (0.025 seconds)
0: jdbc:hive2://zk0-testja.e0mrrixnyxde5h1suy> *select
date_format(current_timestamp,"yyyy-MM-dd HH:mm:ss.SSS z");*
+------------------------------+
| _c0 |
+------------------------------+
| *{color:red}2021-05-06 12:08:15.118 UTC{color}* |
+------------------------------+
1 row selected (1.074 seconds)
expected result was *2021-05-06 12:08:15.118 IST*
As part of HIVE-12192 it was decided to have a common time zone for all
computation i.e. "UTC". Due to which data_format() function was hard coded to
"UTC".
But later in HIVE-21039 it was decided that user session time zone value should
be the default not UTC.
date_format() was not fixed as part of HIVE-21039.
what should be the ideal time zone value of date_format().
Code -
https://github.com/apache/hive/blob/7b3ecf617a6d46f48a3b6f77e0339fd4ad95a420/ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFDateFormat.java
if (fmtStr != null) {
try {
formatter = new SimpleDateFormat(fmtStr);
formatter.setCalendar(DateTimeMath.getProlepticGregorianCalendarUTC());
} catch (IllegalArgumentException e) {
// ignore
}
> date_format() UDF is returning values in UTC time zone only
> ------------------------------------------------------------
>
> Key: HIVE-25093
> URL: https://issues.apache.org/jira/browse/HIVE-25093
> Project: Hive
> Issue Type: Bug
> Components: UDF
> Affects Versions: 3.1.2
> Reporter: Ashish Sharma
> Assignee: Ashish Sharma
> Priority: Minor
>
> *HIVE - 1.2*
> sshuser@hn0-dateti:~$ *timedatectl*
> Local time: Thu 2021-05-06 11:56:08 IST
> Universal time: Thu 2021-05-06 06:26:08 UTC
> RTC time: Thu 2021-05-06 06:26:08
> Time zone: Asia/Kolkata (IST, +0530)
> Network time on: yes
> NTP synchronized: yes
> RTC in local TZ: no
> sshuser@hn0-dateti:~$ beeline
> 0: jdbc:hive2://localhost:10001/default> *select
> date_format(current_timestamp,"yyyy-MM-dd HH:mm:ss.SSS z");*
> +------------------------------+--+
> | _c0 |
> +------------------------------+--+
> | 2021-05-06 11:58:53.760 IST |
> +------------------------------+--+
> 1 row selected (1.271 seconds)
> *HIVE - 3.1.0*
> sshuser@hn0-testja:~$ *timedatectl*
> Local time: Thu 2021-05-06 12:03:32 IST
> Universal time: Thu 2021-05-06 06:33:32 UTC
> RTC time: Thu 2021-05-06 06:33:32
> Time zone: Asia/Kolkata (IST, +0530)
> Network time on: yes
> NTP synchronized: yes
> RTC in local TZ: no
> sshuser@hn0-testja:~$ beeline
> 0: jdbc:hive2://zk0-testja.e0mrrixnyxde5h1suy> *select
> date_format(current_timestamp,"yyyy-MM-dd HH:mm:ss.SSS z");*
> +------------------------------+
> | _c0 |
> +------------------------------+
> | *2021-05-06 06:33:59.078 UTC* |
> +------------------------------+
> 1 row selected (13.396 seconds)
> 0: jdbc:hive2://zk0-testja.e0mrrixnyxde5h1suy> *set
> hive.local.time.zone=Asia/Kolkata;*
> No rows affected (0.025 seconds)
> 0: jdbc:hive2://zk0-testja.e0mrrixnyxde5h1suy> *select
> date_format(current_timestamp,"yyyy-MM-dd HH:mm:ss.SSS z");*
> +------------------------------+
> | _c0 |
> +------------------------------+
> | *{color:red}2021-05-06 12:08:15.118 UTC{color}* |
> +------------------------------+
> 1 row selected (1.074 seconds)
> expected result was *2021-05-06 12:08:15.118 IST*
> As part of HIVE-12192 it was decided to have a common time zone for all
> computation i.e. "UTC". Due to which data_format() function was hard coded to
> "UTC".
> But later in HIVE-21039 it was decided that user session time zone value
> should be the default not UTC.
> date_format() was not fixed as part of HIVE-21039.
> what should be the ideal time zone value of date_format().
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