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https://issues.apache.org/jira/browse/HIVE-20330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16700259#comment-16700259
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Hive QA commented on HIVE-20330:
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| (/) *{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
34s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 7m
5s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
38s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
23s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m
32s{color} | {color:blue} hcatalog/core in master has 31 extant Findbugs
warnings. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m
26s{color} | {color:blue} hcatalog/hcatalog-pig-adapter in master has 2 extant
Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
23s{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} 0m
40s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
37s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
37s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
12s{color} | {color:green} hcatalog/core: The patch generated 0 new + 113
unchanged - 10 fixed = 113 total (was 123) {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
10s{color} | {color:green} hcatalog/hcatalog-pig-adapter: The patch generated 0
new + 102 unchanged - 1 fixed = 102 total (was 103) {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} 0m
40s{color} | {color:green} hcatalog/core generated 0 new + 30 unchanged - 1
fixed = 30 total (was 31) {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m
31s{color} | {color:green} hcatalog-pig-adapter in the patch passed. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
23s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
12s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 14m 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
3.16.36-1+deb8u1 (2016-09-03) x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/data/hiveptest/working/yetus_PreCommit-HIVE-Build-15071/dev-support/hive-personality.sh
|
| git revision | master / 7c5b99b |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| modules | C: hcatalog/core hcatalog/hcatalog-pig-adapter U: hcatalog |
| Console output |
http://104.198.109.242/logs//PreCommit-HIVE-Build-15071/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> HCatLoader cannot handle multiple InputJobInfo objects for a job with
> multiple inputs
> -------------------------------------------------------------------------------------
>
> Key: HIVE-20330
> URL: https://issues.apache.org/jira/browse/HIVE-20330
> Project: Hive
> Issue Type: Bug
> Components: HCatalog
> Reporter: Adam Szita
> Assignee: Adam Szita
> Priority: Major
> Attachments: HIVE-20330.0.patch, HIVE-20330.1.patch,
> HIVE-20330.2.patch, HIVE-20330.3.patch
>
>
> While running performance tests on Pig (0.12 and 0.17) we've observed a huge
> performance drop in a workload that has multiple inputs from HCatLoader.
> The reason is that for a particular MR job with multiple Hive tables as
> input, Pig calls {{setLocation}} on each {{LoaderFunc (HCatLoader)}} instance
> but only one table's information (InputJobInfo instance) gets tracked in the
> JobConf. (This is under config key {{HCatConstants.HCAT_KEY_JOB_INFO}}).
> Any such call overwrites preexisting values, and thus only the last table's
> information will be considered when Pig calls {{getStatistics}} to calculate
> and estimate required reducer count.
> In cases when there are 2 input tables, 256GB and 1MB in size respectively,
> Pig will query the size information from HCat for both of them, but it will
> either see 1MB+1MB=2MB or 256GB+256GB=0.5TB depending on input order in the
> execution plan's DAG.
> It should of course see 256.00097GB in total and use 257 reducers by default
> accordingly.
> In unlucky cases this will be seen as 2MB and 1 reducer will have to struggle
> with the actual 256.00097GB...
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