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https://issues.apache.org/jira/browse/HIVE-21007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16710700#comment-16710700
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Hive QA commented on HIVE-21007:
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| (x) *{color:red}-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
1s{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} 7m
46s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
3s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
38s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 3m
51s{color} | {color:blue} ql in master has 2312 extant Findbugs warnings.
{color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
56s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
1s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
1s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
36s{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:red}-1{color} | {color:red} findbugs {color} | {color:red} 3m
55s{color} | {color:red} ql generated 1 new + 2312 unchanged - 0 fixed = 2313
total (was 2312) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
54s{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} 22m 42s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:ql |
| | Dead store to semijoins in
org.apache.hadoop.hive.ql.parse.TezCompiler.removeSemiJoinEdgesForUnion(OptimizeTezProcContext)
At
TezCompiler.java:org.apache.hadoop.hive.ql.parse.TezCompiler.removeSemiJoinEdgesForUnion(OptimizeTezProcContext)
At TezCompiler.java:[line 1351] |
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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-15187/dev-support/hive-personality.sh
|
| git revision | master / 02b1ee3 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| findbugs |
http://104.198.109.242/logs//PreCommit-HIVE-Build-15187/yetus/new-findbugs-ql.html
|
| modules | C: ql U: ql |
| Console output |
http://104.198.109.242/logs//PreCommit-HIVE-Build-15187/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> Semi join + Union can lead to wrong plans
> -----------------------------------------
>
> Key: HIVE-21007
> URL: https://issues.apache.org/jira/browse/HIVE-21007
> Project: Hive
> Issue Type: Bug
> Reporter: Vineet Garg
> Assignee: Vineet Garg
> Priority: Major
> Attachments: HIVE-21007.1.patch, HIVE-21007.2.patch
>
>
> Tez compiler has the ability to push JOIN within UNION (by replicating join
> on each branch). If this JOIN had a SJ branch outgoing (or incoming) it could
> mess up the plan and end up generating incorrect or wrong plan.
> As a safe measure any SJ branch after UNION should be removed (until we
> improve the logic to better handle SJ branches)
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