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https://issues.apache.org/jira/browse/HIVE-20210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16555732#comment-16555732
]
Hive QA commented on HIVE-20210:
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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} 8m
32s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
4s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
42s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 4m
4s{color} | {color:blue} ql in master has 2280 extant Findbugs warnings.
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| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
58s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
27s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
9s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
9s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
39s{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
18s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
58s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
13s{color} | {color:green} The patch does not generate ASF License warnings.
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| {color:black}{color} | {color:black} {color} | {color:black} 24m 36s{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-12853/dev-support/hive-personality.sh
|
| git revision | master / ca0d706 |
| 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-12853/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> Simple Fetch optimizer should lead to MapReduce when filter on non-partition
> column and conversion is minimal
> -------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-20210
> URL: https://issues.apache.org/jira/browse/HIVE-20210
> Project: Hive
> Issue Type: Bug
> Components: Query Planning
> Affects Versions: 2.3.0, 2.3.1, 2.3.2
> Reporter: Jeffrey(Xilang) Yan
> Assignee: Jeffrey(Xilang) Yan
> Priority: Major
> Attachments: HIVE-20210.2.patch, HIVE-20210.3.patch,
> HIVE-20210.4.patch, HIVE-20210.patch
>
>
> When conversion is minimal, simple fetch can be used only when filter on
> partition column or no filter at all. But it lead to simple fetch even if
> filter on non-partition column. Unit test " select * from srcpart where key >
> 100 limit 10 " in the nonmr_fetch.q demonstration this issue – the unit test
> is not correct indeed(it should be Map Reduce but in test it is Simple
> Fetch).
> This issue lead to a serious problem when data size is huge. When conversion
> is more and filter on both partition column and non-partition column, it will
> not chech hive.fetch.task.conversion.threshold, which lead to the query to
> takes hours to finish. This issue doesn't exist in 1.2.1, how it works should
> be a magic...
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