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Posted to issues@hive.apache.org by "Hive QA (Jira)" <ji...@apache.org> on 2019/11/09 05:40:00 UTC

[jira] [Commented] (HIVE-22476) Hive datediff function provided inconsistent results when hive.fetch.task.conversion is set to none

    [ https://issues.apache.org/jira/browse/HIVE-22476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16970727#comment-16970727 ] 

Hive QA commented on HIVE-22476:
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|| Vote || Subsystem || Runtime || Comment ||
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  0s{color} | {color:green} The patch does not contain any @author tags. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  2m  1s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 24s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 24s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 51s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m 34s{color} | {color:blue} common in master has 65 extant Findbugs warnings. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  4m  5s{color} | {color:blue} ql in master has 1549 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 17s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 26s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 48s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 52s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m  0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  4m 57s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 13s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 15s{color} | {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 29m 16s{color} | {color:black} {color} |
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|| Subsystem || Report/Notes ||
| Optional Tests |  asflicense  javac  javadoc  findbugs  checkstyle  compile  |
| uname | Linux hiveptest-server-upstream 3.16.0-4-amd64 #1 SMP Debian 3.16.43-2+deb8u5 (2017-09-19) x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /data/hiveptest/working/yetus_PreCommit-HIVE-Build-19362/dev-support/hive-personality.sh |
| git revision | master / 4d4ab36 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.1 |
| modules | C: common ql U: . |
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-19362/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Hive datediff function provided inconsistent results when hive.fetch.task.conversion is set to none
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-22476
>                 URL: https://issues.apache.org/jira/browse/HIVE-22476
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Slim Bouguerra
>            Assignee: Slim Bouguerra
>            Priority: Major
>         Attachments: HIVE-22476.patch
>
>
> The actual issue stems to the different date parser used by various part of the engine.
> Fetch task uses udfdatediff via {code} org.apache.hadoop.hive.ql.udf.generic.GenericUDFToDate{code} while the vectorized llap execution uses {code}VectorUDFDateDiffScalarCol{code}.
> This fix is meant to be not very intrusive and will add more support to the GenericUDFToDate by enhancing the parser.
> For the longer term will be better to use one parser for all the operators.
> Thanks [~Rajkumar Singh] for the repro example
> {code} 
> create external table testdatediff(datetimecol string) stored as orc;
> insert into testdatediff values ('2019-09-09T10:45:49+02:00'),('2019-07-24');
> select datetimecol from testdatediff where datediff(cast(current_timestamp as string), datetimecol)<183;
> set hive.ferch.task.conversion=none;
> select datetimecol from testdatediff where datediff(cast(current_timestamp as string), datetimecol)<183;
> {code}



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