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Hive QA commented on HIVE-19847: -------------------------------- | (x) *{color:red}-1 overall{color}* | \\ \\ || 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} 0m 24s{color} | {color:blue} Maven dependency ordering for branch {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 6m 17s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 9s{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} 0m 29s{color} | {color:blue} common in master has 62 extant Findbugs warnings. {color} | | {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 3m 26s{color} | {color:blue} ql in master has 2279 extant Findbugs warnings. {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 1s{color} | {color:green} master passed {color} | || || || || {color:brown} Patch Compile Tests {color} || | {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 7s{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 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 13s{color} | {color:red} common: The patch generated 1 new + 428 unchanged - 0 fixed = 429 total (was 428) {color} | | {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 35s{color} | {color:red} ql: The patch generated 14 new + 154 unchanged - 28 fixed = 168 total (was 182) {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} 0m 36s{color} | {color:green} common in the patch passed. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m 33s{color} | {color:green} ql generated 0 new + 2276 unchanged - 3 fixed = 2276 total (was 2279) {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 11s{color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black} 23m 8s{color} | {color:black} {color} | \\ \\ || 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-11727/dev-support/hive-personality.sh | | git revision | master / e7cee30 | | Default Java | 1.8.0_111 | | findbugs | v3.0.0 | | checkstyle | http://104.198.109.242/logs//PreCommit-HIVE-Build-11727/yetus/diff-checkstyle-common.txt | | checkstyle | http://104.198.109.242/logs//PreCommit-HIVE-Build-11727/yetus/diff-checkstyle-ql.txt | | modules | C: common ql U: . | | Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-11727/yetus.txt | | Powered by | Apache Yetus http://yetus.apache.org | This message was automatically generated. > Create Separate getInputSummary Service > --------------------------------------- > > Key: HIVE-19847 > URL: https://issues.apache.org/jira/browse/HIVE-19847 > Project: Hive > Issue Type: Improvement > Components: HiveServer2 > Affects Versions: 3.0.0, 4.0.0 > Reporter: BELUGA BEHR > Assignee: BELUGA BEHR > Priority: Major > Attachments: HIVE-19847.1.patch, HIVE-19847.2.patch > > > The Hive {{org.apache.hadoop.hive.ql.exec.Utilities.java}} file has taken on > a life of its own. We should consider separating out the various components > into their own classes. For this ticket, I propose separating out the > {{getInputSummary}} functionality into its own class. > There are several issues with the current implementation: > # It is > [synchronized|https://github.com/apache/hive/blob/f27c38ff55902827499192a4f8cf8ed37d6fd967/ql/src/java/org/apache/hadoop/hive/ql/exec/Utilities.java#L2383]. > Only one query can get file input summary at a time. For a query which > deals with a large data set with a large number of files, this can block > other queries for a long period of time. This is especially painful when > most queries use a small data set, but a large data set is submitted on > occasion. > # For each query, time is spend setting up and tearing down a ThreadPool > # It uses deprecated code > I propose breaking it out into its own class and creating a single thread > pool that all queries pull from. In this way, the bottle neck will be one > the number of available threads, not on a single query and if a big query is > running and a small query is also submitted, the smaller query will be able > to proceed. -- This message was sent by Atlassian JIRA (v7.6.3#76005)