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From "Hive QA (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-23082) PK/FK stat rescale doesn't work in some cases
Date Fri, 03 Apr 2020 14:15:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-23082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17074614#comment-17074614
] 

Hive QA commented on HIVE-23082:
--------------------------------

| (/) *{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}  1m 37s{color} | {color:blue}
Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 47s{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 39s{color}
| {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  3m 44s{color} | {color:blue}
ql in master has 1528 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 52s{color} |
{color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 28s{color} | {color:blue}
Maven dependency ordering for patch {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}  0m 59s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 59s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 41s{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}  3m 54s{color} |
{color:green} the patch passed {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 14s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 25m 41s{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 3.16.43-2+deb8u5 (2017-09-19)
x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /data/hiveptest/working/yetus_PreCommit-HIVE-Build-21422/dev-support/hive-personality.sh
|
| git revision | master / 3ab174d |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.1 |
| modules | C: ql itests U: . |
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-21422/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> PK/FK stat rescale doesn't work in some cases
> ---------------------------------------------
>
>                 Key: HIVE-23082
>                 URL: https://issues.apache.org/jira/browse/HIVE-23082
>             Project: Hive
>          Issue Type: Bug
>          Components: Statistics
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>         Attachments: HIVE-23082.01.patch, HIVE-23082.02.patch, HIVE-23082.03.patch, HIVE-23082.03.patch,
HIVE-23082.03.patch
>
>
> As a result in Joins may retain the original estimate; see MAPJOIN_33 in this plan ;
which retained the estimate of SEL_32
> {code}
> +----------------------------------------------------+
> |                      Explain                       |
> +----------------------------------------------------+
> | Plan optimized by CBO.                             |
> |                                                    |
> | Vertex dependency in root stage                    |
> | Map 1 <- Map 2 (BROADCAST_EDGE)                    |
> |                                                    |
> | Stage-0                                            |
> |   Fetch Operator                                   |
> |     limit:12                                       |
> |     Stage-1                                        |
> |       Map 1 vectorized                             |
> |       File Output Operator [FS_36]                 |
> |         Limit [LIM_35] (rows=12 width=4)           |
> |           Number of rows:12                        |
> |           Select Operator [SEL_34] (rows=5040 width=4) |
> |             Output:["_col0"]                       |
> |             Map Join Operator [MAPJOIN_33] (rows=5040 width=8) |
> |               Conds:SEL_32._col0=RS_30._col0(Inner) |
> |             <-Map 2 [BROADCAST_EDGE] vectorized    |
> |               BROADCAST [RS_30]                    |
> |                 PartitionCols:_col0                |
> |                 Select Operator [SEL_29] (rows=1 width=8) |
> |                   Output:["_col0"]                 |
> |                   Filter Operator [FIL_28] (rows=1 width=108) |
> |                     predicate:((r_reason_id = 'reason 66') and r_reason_sk is not null)
|
> |                     TableScan [TS_3] (rows=2 width=108) |
> |                       default@rx0,reason,Tbl:COMPLETE,Col:COMPLETE,Output:["r_reason_id","r_reason_sk"]
|
> |             <-Select Operator [SEL_32] (rows=5040 width=7) |
> |                 Output:["_col0"]                   |
> |                 Filter Operator [FIL_31] (rows=5040 width=7) |
> |                   predicate:sr_reason_sk is not null |
> |                   TableScan [TS_0] (rows=5112 width=7) |
> |                     default@sr0,store_returns,Tbl:COMPLETE,Col:COMPLETE,Output:["sr_reason_sk"]
|
> |                                                    |
> +----------------------------------------------------+
> {code}
> repro:
> {code}
> set hive.query.results.cache.enabled=false;
> set hive.explain.user=true;
> drop table if exists default.rx0;
> drop table if exists default.sr0;
> create table rx0 (r_reason_id string, r_reason_sk bigint);
> create table sr0 (sr_reason_sk bigint);
> insert into rx0 values ('AAAAAAAAAAAAAAAA',1),('AAAAAAAAGEAAAAAA',70);
> insert into sr0 values (NULL),(1),(2),(3),(4),(5),(6),(7),(8),(9),(10),
> (11),(12),(13),(14),(15),(16),(17),(18),(19),(20),(21),(22),(23),(24),(25),
> (26),(27),(28),(29),(30),(31),(32),(33),(34),(35),(36),(37),(38),(39),(40),
> (41),(42),(43),(44),(45),(46),(47),(48),(49),(50),(51),(52),(53),(54),(55),
> (56),(57),(58),(59),(60),(61),(62),(63),(64),(65),(66),(67),(68),(69),(70);
> insert into sr0 select a.* from sr0 a,sr0 b;
> -- |sr0| ~ 5112
> explain select 1
> from default.sr0  store_returns , default.rx0 reason
>             where sr_reason_sk = r_reason_sk
>               and r_reason_id = 'reason 66'
> limit 12;
> {code}



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