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https://issues.apache.org/jira/browse/HIVE-21915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16871562#comment-16871562
]
Hive QA commented on HIVE-21915:
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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} 9m
2s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
5s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
41s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 4m
8s{color} | {color:blue} ql in master has 2254 extant Findbugs warnings.
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| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
0s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
31s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
10s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
10s{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
19s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
3s{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.
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| {color:black}{color} | {color:black} {color} | {color:black} 25m 27s{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-17710/dev-support/hive-personality.sh
|
| git revision | master / 11f7856 |
| 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-17710/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> Hive with TEZ UNION ALL and UDTF results in data loss
> -----------------------------------------------------
>
> Key: HIVE-21915
> URL: https://issues.apache.org/jira/browse/HIVE-21915
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 1.2.1
> Reporter: Wei Zhang
> Assignee: Wei Zhang
> Priority: Major
> Attachments: HIVE-21915.01.patch
>
>
> The HQL syntax is like this:
> CREATE TEMPORARY TABLE tez_union_all_loss_data AS
> SELECT xxx, yyy, zzz,1 as tag
> FROM ods_1
> UNION ALL
> SELECT xxx, yyy, zzz, tag
> FROM
> (
> SELECT xxx
> ,get_json_object(get_json_object(tb,'$.a'),'$.b') AS yyy
> ,zzz
> ,2 as tag
> FROM ods_2
> LATERAL VIEW EXPLODE(some_udf(uuu)) team_number AS tb
> ) tbl
> ;
>
> With above HQL, we are expecting that rows with both tag = 2 and tag = 1
> appear. In our case however, all the rows with tag = 1 are lost.
> Dig deeper we can find that the generated two maps have identical task tmp
> paths. And that results from when UDTF is present, the FileSinkOperator will
> be processed twice generating the tmp path in
> GenTezUtils.removeUnionOperators();
>
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