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Posted to issues@hive.apache.org by "Hive QA (Jira)" <ji...@apache.org> on 2020/02/16 03:06:00 UTC
[jira] [Commented] (HIVE-22893) Enhance data size estimation for
fields computed by UDFs
[ https://issues.apache.org/jira/browse/HIVE-22893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17037692#comment-17037692 ]
Hive QA commented on HIVE-22893:
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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:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 1m 49s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 8m 6s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 22s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 56s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m 35s{color} | {color:blue} common in master has 63 extant Findbugs warnings. {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 4m 1s{color} | {color:blue} ql in master has 1534 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 11s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 31s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 45s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 21s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 21s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 43s{color} | {color:red} ql: The patch generated 6 new + 127 unchanged - 0 fixed = 133 total (was 127) {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} findbugs {color} | {color:red} 3m 58s{color} | {color:red} ql generated 1 new + 1534 unchanged - 0 fixed = 1535 total (was 1534) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 12s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red} 0m 17s{color} | {color:red} The patch generated 1 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 29m 33s{color} | {color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:ql |
| | Dead store to start in org.apache.hadoop.hive.ql.udf.UDFSubstr$SubStrStatEstimator.estimate(List) At UDFSubstr.java:org.apache.hadoop.hive.ql.udf.UDFSubstr$SubStrStatEstimator.estimate(List) At UDFSubstr.java:[line 157] |
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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-20659/dev-support/hive-personality.sh |
| git revision | master / 052b795 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.1 |
| checkstyle | http://104.198.109.242/logs//PreCommit-HIVE-Build-20659/yetus/diff-checkstyle-ql.txt |
| whitespace | http://104.198.109.242/logs//PreCommit-HIVE-Build-20659/yetus/whitespace-eol.txt |
| findbugs | http://104.198.109.242/logs//PreCommit-HIVE-Build-20659/yetus/new-findbugs-ql.html |
| asflicense | http://104.198.109.242/logs//PreCommit-HIVE-Build-20659/yetus/patch-asflicense-problems.txt |
| modules | C: common ql U: . |
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-20659/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> Enhance data size estimation for fields computed by UDFs
> --------------------------------------------------------
>
> Key: HIVE-22893
> URL: https://issues.apache.org/jira/browse/HIVE-22893
> Project: Hive
> Issue Type: Improvement
> Components: Statistics
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
> Labels: pull-request-available
> Attachments: HIVE-22893.01.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Right now if we have columnstat on a column ; we use that to estimate things about the column; - however if an UDF is executed on a column ; the resulting column is treated as unknown thing and defaults are assumed.
> An improvement could be to give wide estimation(s) in case of frequently used udf.
> For example; consider {{substr(c,1,1)}} ; no matter what the input; the output is at most a 1 long string
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