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https://issues.apache.org/jira/browse/HIVE-17040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16577043#comment-16577043
]
Hive QA commented on HIVE-17040:
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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
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
3s{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
41s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 4m
17s{color} | {color:blue} ql in master has 2305 extant Findbugs warnings.
{color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
2s{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:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m
40s{color} | {color:red} ql: The patch generated 9 new + 171 unchanged - 4
fixed = 180 total (was 175) {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m
0s{color} | {color:red} The patch has 26 line(s) that end in whitespace. Use
git apply --whitespace=fix <<patch_file>>. Refer
https://git-scm.com/docs/git-apply {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 4m
26s{color} | {color:red} ql generated 1 new + 2305 unchanged - 0 fixed = 2306
total (was 2305) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
1s{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.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 25m 42s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:ql |
| | Dead store to p1 in
org.apache.hadoop.hive.ql.optimizer.calcite.rules.HiveJoinConstraintsRule$EquivalenceClasses.addEquivalenceClass(RexTableInputRef,
RexTableInputRef) At
HiveJoinConstraintsRule.java:org.apache.hadoop.hive.ql.optimizer.calcite.rules.HiveJoinConstraintsRule$EquivalenceClasses.addEquivalenceClass(RexTableInputRef,
RexTableInputRef) At HiveJoinConstraintsRule.java:[line 384] |
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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-13167/dev-support/hive-personality.sh
|
| git revision | master / 380946c |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| checkstyle |
http://104.198.109.242/logs//PreCommit-HIVE-Build-13167/yetus/diff-checkstyle-ql.txt
|
| whitespace |
http://104.198.109.242/logs//PreCommit-HIVE-Build-13167/yetus/whitespace-eol.txt
|
| findbugs |
http://104.198.109.242/logs//PreCommit-HIVE-Build-13167/yetus/new-findbugs-ql.html
|
| modules | C: ql U: ql |
| Console output |
http://104.198.109.242/logs//PreCommit-HIVE-Build-13167/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> Join elimination in the presence of FK relationship
> ---------------------------------------------------
>
> Key: HIVE-17040
> URL: https://issues.apache.org/jira/browse/HIVE-17040
> Project: Hive
> Issue Type: Sub-task
> Components: Logical Optimizer
> Affects Versions: 3.0.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Priority: Major
> Attachments: HIVE-17040.patch
>
>
> If the PK/UK table is not filtered, we can safely remove the join.
> A simple example:
> {code:sql}
> SELECT c_current_cdemo_sk
> FROM customer, customer_address
> ON c_current_addr_sk = ca_address_sk;
> {code}
> As a Calcite rule, we could implement this rewriting by 1) matching a Project
> on top of a Join operator, 2) checking that only columns from the FK are used
> in the Project, 3) checking that the join condition matches the FK - PK/UK
> relationship, 4) pulling all the predicates from the PK/UK side and checking
> that the input is not filtered, and 5) removing the join, possibly adding a
> IS NOT NULL condition on the join column from the FK side.
> If the PK/UK table is filtered, we should still transform the Join into a
> SemiJoin operator.
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