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https://issues.apache.org/jira/browse/HIVE-20260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16562214#comment-16562214
]
Hive QA commented on HIVE-20260:
--------------------------------
| (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} 8m
35s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
10s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
46s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 4m
41s{color} | {color:blue} ql in master has 2297 extant Findbugs warnings.
{color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
7s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
38s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
11s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
11s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m
42s{color} | {color:red} ql: The patch generated 3 new + 21 unchanged - 28
fixed = 24 total (was 49) {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m
0s{color} | {color:red} The patch has 1 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} whitespace {color} | {color:red} 0m
0s{color} | {color:red} The patch 4 line(s) with tabs. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 4m
37s{color} | {color:red} ql generated 7 new + 2290 unchanged - 7 fixed = 2297
total (was 2297) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
2s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
13s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 26m 20s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:ql |
| | Boxing/unboxing to parse a primitive
org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
AnnotateStatsProcCtx, ExprNodeGenericFuncDesc, long) At
StatsRulesProcFactory.java:org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
AnnotateStatsProcCtx, ExprNodeGenericFuncDesc, long) At
StatsRulesProcFactory.java:[line 927] |
| | Boxing/unboxing to parse a primitive
org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
AnnotateStatsProcCtx, ExprNodeGenericFuncDesc, long) At
StatsRulesProcFactory.java:org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
AnnotateStatsProcCtx, ExprNodeGenericFuncDesc, long) At
StatsRulesProcFactory.java:[line 948] |
| |
org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
AnnotateStatsProcCtx, ExprNodeGenericFuncDesc, long) invokes inefficient new
Byte(String) constructor; use Byte.valueOf(String) instead At
StatsRulesProcFactory.java:inefficient new Byte(String) constructor; use
Byte.valueOf(String) instead At StatsRulesProcFactory.java:[line 883] |
| |
org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
AnnotateStatsProcCtx, ExprNodeGenericFuncDesc, long) invokes inefficient new
Integer(String) constructor; use Integer.valueOf(String) instead At
StatsRulesProcFactory.java:inefficient new Integer(String) constructor; use
Integer.valueOf(String) instead At StatsRulesProcFactory.java:[line 927] |
| |
org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
AnnotateStatsProcCtx, ExprNodeGenericFuncDesc, long) invokes inefficient new
Long(String) constructor; use Long.valueOf(String) instead At
StatsRulesProcFactory.java:inefficient new Long(String) constructor; use
Long.valueOf(String) instead At StatsRulesProcFactory.java:[line 948] |
| |
org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
AnnotateStatsProcCtx, ExprNodeGenericFuncDesc, long) invokes inefficient new
Short(String) constructor; use Short.valueOf(String) instead At
StatsRulesProcFactory.java:inefficient new Short(String) constructor; use
Short.valueOf(String) instead At StatsRulesProcFactory.java:[line 902] |
| | Comparison of String objects using == or != in
org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
AnnotateStatsProcCtx, ExprNodeGenericFuncDesc, long) At
StatsRulesProcFactory.java:== or != in
org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$FilterStatsRule.evaluateComparator(Statistics,
AnnotateStatsProcCtx, ExprNodeGenericFuncDesc, long) At
StatsRulesProcFactory.java:[line 923] |
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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-12945/dev-support/hive-personality.sh
|
| git revision | master / 350445d |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| checkstyle |
http://104.198.109.242/logs//PreCommit-HIVE-Build-12945/yetus/diff-checkstyle-ql.txt
|
| whitespace |
http://104.198.109.242/logs//PreCommit-HIVE-Build-12945/yetus/whitespace-eol.txt
|
| whitespace |
http://104.198.109.242/logs//PreCommit-HIVE-Build-12945/yetus/whitespace-tabs.txt
|
| findbugs |
http://104.198.109.242/logs//PreCommit-HIVE-Build-12945/yetus/new-findbugs-ql.html
|
| modules | C: ql U: ql |
| Console output |
http://104.198.109.242/logs//PreCommit-HIVE-Build-12945/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> NDV of a column shouldn't be scaled when row count is changed by filter on
> another column
> -----------------------------------------------------------------------------------------
>
> Key: HIVE-20260
> URL: https://issues.apache.org/jira/browse/HIVE-20260
> Project: Hive
> Issue Type: Improvement
> Components: Statistics
> Reporter: Ashutosh Chauhan
> Assignee: Zoltan Haindrich
> Priority: Major
> Attachments: HIVE-20260.01wip01.patch, HIVE-20260.01wip02.patch
>
>
> HIVE-17465 introduced progressive scaling of rowcounts in presence of
> multiple filters. HIVE-19500 improved on that by also scaling col stats (NDV)
> in such scenario. However, it should pay attention to column used in filter
> expression and not scale for all filters. eg.,
> consider filter a = 1 and b = 2 ndv of column b should not be scaled down by
> row count changes caused by a = 1
> Other way to say this that ndv of a particular column should be updated at
> the end of computation of row count for that operator.
> Here are the possible cases where our estimates can be accurate (or close to)
> {code}
> case 1 - (d_year = 2001 and d_moy=1)
> case 2 - (d_year = 2001 and d_year IN (2001, 2002))
> case 3 - (d_year = 2001 and d_moy = 1 and d_dom = 1)
> case 4 - (d_date IN ('1999-01-02', '1999-01-02'))
> case 5 - (d_date = '1999-01-01')
> {code}
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