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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-20646) Partition filter condition is not pushed down to metastore query if it has IS NOT NULL.
Date Fri, 05 Oct 2018 17:18:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-20646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16640096#comment-16640096
] 

Hive QA commented on HIVE-20646:
--------------------------------

| (/) *{color:green}+1 overall{color}* |
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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}  0m 23s{color} | {color:blue}
Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 46s{color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m  1s{color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 54s{color}
| {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  2m 25s{color} | {color:blue}
standalone-metastore/metastore-common in master has 28 extant Findbugs warnings. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  3m 58s{color} | {color:blue}
ql in master has 2320 extant Findbugs warnings. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  1m  7s{color} | {color:blue}
standalone-metastore/metastore-server in master has 183 extant Findbugs warnings. {color}
|
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  2m  8s{color} |
{color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m  9s{color} | {color:blue}
Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  2m 26s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 59s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 59s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m  7s{color}
| {color:green} The patch metastore-common passed checkstyle {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 37s{color}
| {color:green} ql: The patch generated 0 new + 52 unchanged - 1 fixed = 52 total (was 53)
{color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m  7s{color}
| {color:green} The patch metastore-server passed checkstyle {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}  8m 18s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  2m 12s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 14s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 37m 55s{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 3.16.36-1+deb8u1 (2016-09-03)
x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /data/hiveptest/working/yetus_PreCommit-HIVE-Build-14256/dev-support/hive-personality.sh
|
| git revision | master / 9593e46 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| modules | C: standalone-metastore/metastore-common ql standalone-metastore/metastore-server
U: . |
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-14256/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Partition filter condition is not pushed down to metastore query if it has IS NOT NULL.
> ---------------------------------------------------------------------------------------
>
>                 Key: HIVE-20646
>                 URL: https://issues.apache.org/jira/browse/HIVE-20646
>             Project: Hive
>          Issue Type: Improvement
>          Components: HiveServer2, Standalone Metastore
>    Affects Versions: 3.1.0, 4.0.0
>            Reporter: Sankar Hariappan
>            Assignee: Sankar Hariappan
>            Priority: Major
>              Labels: Metastore, Performance, pull-request-available
>         Attachments: HIVE-20646.01.patch, HIVE-20646.02.patch, HIVE-20646.03.patch
>
>
> If the partition filter condition has "is not null" then the filter query isn't getting
pushed to the SQL query in RDMBS. 
> This slows down metastore api calls for getting list of partitions with filter condition.
> This condition gets added by optimizer in many cases so this is affecting many queries.



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