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https://issues.apache.org/jira/browse/HIVE-19557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16477621#comment-16477621
 ] 

Hive QA commented on HIVE-19557:
--------------------------------

| (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}  7m 
45s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  
4s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
37s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  3m 
49s{color} | {color:blue} ql in master has 2320 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  
2s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m  
2s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 
36s{color} | {color:red} ql: The patch generated 1 new + 39 unchanged - 0 fixed 
= 40 total (was 39) {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red}  0m  
0s{color} | {color:red} The patch 10 line(s) with tabs. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  4m  
7s{color} | {color:red} ql generated 1 new + 2320 unchanged - 0 fixed = 2321 
total (was 2320) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
55s{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 50s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:ql |
|  |  Comparison of String objects using == or != in 
org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
 ExprNodeGenericFuncDesc, long)   At StatsRulesProcFactory.java:== or != in 
org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
 ExprNodeGenericFuncDesc, long)   At StatsRulesProcFactory.java:[line 757] |
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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-10991/dev-support/hive-personality.sh
 |
| git revision | master / bd9264f |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| checkstyle | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-10991/yetus/diff-checkstyle-ql.txt
 |
| whitespace | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-10991/yetus/whitespace-tabs.txt
 |
| findbugs | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-10991/yetus/new-findbugs-ql.html
 |
| modules | C: ql U: ql |
| Console output | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-10991/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> stats: filters for dates are not taking advantage of min/max values
> -------------------------------------------------------------------
>
>                 Key: HIVE-19557
>                 URL: https://issues.apache.org/jira/browse/HIVE-19557
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Planning
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>         Attachments: HIVE-19557.01.patch, HIVE-19557.02.patch
>
>
> in StatsRulesProcFactory 
> [https://github.com/apache/hive/blob/ab189f54047bbf6beeeaf8d0dcfd5fbe92e465fb/ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java#L754|dates
>  are assumed to be an integer]; however this is currently not true - and the 
> resulting exception is handled as a default case... for N/3
> {code}
> set hive.explain.user=true;
> create table d1(d date);
> --  tblproperties('transactional'='false');
> insert into d1 values
>         ('2010-10-01'),
>         ('2010-10-02'),
>         ('2010-10-03'),
>         ('2010-10-04'),
>         ('2010-10-05'),
>         ('2010-10-06'),
>         ('2010-10-07'),
>         ('2010-10-08'),
>         ('2010-10-09'),
>         ('2010-10-10');
> analyze table d1 compute statistics for columns;
> desc formatted d1;
> desc formatted d1 d;
> explain
> select 'stats: FIL ~0 read',count(1) from d1 where d < '2010-03-01';
> explain
> select 'stats: FIL estimate some read',count(1) from d1 where d < 
> '2010-10-03';
> explain
> select 'stats: FIL estimate all read',count(1) from d1 where d < '2010-11-03';
> {code}



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