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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-15131) Change Parquet reader to read metadata on the task side
Date Wed, 18 Jul 2018 18:19:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-15131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16548206#comment-16548206
] 

Hive QA commented on HIVE-15131:
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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:green}+1{color} | {color:green} mvninstall {color} | {color:green} 39m 35s{color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  9s{color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 43s{color}
| {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  4m 13s{color} | {color:blue}
ql in master has 2274 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  1s{color} |
{color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 29s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  6s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m  6s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 40s{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 29s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  0s{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} 56m 12s{color} | {color:black}
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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-12669/dev-support/hive-personality.sh
|
| git revision | master / bac1d98 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| modules | C: ql U: ql |
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-12669/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Change Parquet reader to read metadata on the task side
> -------------------------------------------------------
>
>                 Key: HIVE-15131
>                 URL: https://issues.apache.org/jira/browse/HIVE-15131
>             Project: Hive
>          Issue Type: Bug
>          Components: Reader
>            Reporter: Chao Sun
>            Assignee: Adesh Kumar Rao
>            Priority: Major
>         Attachments: HIVE-15131.1.patch, HIVE-15131.2.patch
>
>
> Currently the {{ParquetRecordReaderWrapper}} still uses the {{readFooter}} API without
filtering, which means it needs to read metadata about all row groups every time. This could
some issues when input dataset is particularly big and has many columns.
> [Parquet-84|https://issues.apache.org/jira/browse/PARQUET-84] introduced another API
which allows to do row group filtering on the task side. Hive should adopt this API.



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