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https://issues.apache.org/jira/browse/HIVE-17626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16369980#comment-16369980
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Hive QA commented on HIVE-17626:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
|| || || || {color:brown} Prechecks {color} ||
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m
1s{color} | {color:blue} Findbugs executables are not available. {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} 0m
40s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 6m
31s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
13s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
57s{color} | {color:green} master passed {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:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m
8s{color} | {color:blue} Maven dependency ordering for patch {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
14s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
14s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m
15s{color} | {color:red} common: The patch generated 1 new + 420 unchanged - 0
fixed = 421 total (was 420) {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m
40s{color} | {color:red} ql: The patch generated 79 new + 759 unchanged - 117
fixed = 838 total (was 876) {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:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
4s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red} 0m
12s{color} | {color:red} The patch generated 49 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 15m 49s{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
3.16.36-1+deb8u1 (2016-09-03) x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /data/hiveptest/working/yetus/dev-support/hive-personality.sh |
| git revision | master / e0bf12d |
| Default Java | 1.8.0_111 |
| checkstyle |
http://104.198.109.242/logs//PreCommit-HIVE-Build-9273/yetus/diff-checkstyle-common.txt
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| checkstyle |
http://104.198.109.242/logs//PreCommit-HIVE-Build-9273/yetus/diff-checkstyle-ql.txt
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| whitespace |
http://104.198.109.242/logs//PreCommit-HIVE-Build-9273/yetus/whitespace-eol.txt
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| asflicense |
http://104.198.109.242/logs//PreCommit-HIVE-Build-9273/yetus/patch-asflicense-problems.txt
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| modules | C: common itests ql U: . |
| Console output |
http://104.198.109.242/logs//PreCommit-HIVE-Build-9273/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> Query reoptimization using cached runtime statistics
> ----------------------------------------------------
>
> Key: HIVE-17626
> URL: https://issues.apache.org/jira/browse/HIVE-17626
> Project: Hive
> Issue Type: New Feature
> Components: Logical Optimizer
> Affects Versions: 3.0.0
> Reporter: Prasanth Jayachandran
> Assignee: Zoltan Haindrich
> Priority: Major
> Attachments: HIVE-17626.01wip01.patch, runtimestats.patch
>
>
> Something similar to "EXPLAIN ANALYZE" where we annotate explain plan with
> actual and estimated statistics. The runtime stats can be cached at query
> level and subsequent execution of the same query can make use of the cached
> statistics from the previous run for better optimization.
> Some use cases,
> 1) re-planning join query (mapjoin failures can be converted to shuffle joins)
> 2) better statistics for table scan operator if dynamic partition pruning is
> involved
> 3) Better estimates for bloom filter initialization (setting expected entries
> during merge)
> This can extended to support wider queries by caching fragments of operator
> plans scanning same table(s) or matching some operator sequences.
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