[ https://issues.apache.org/jira/browse/HIVE-20552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16621120#comment-16621120 ]
Hive QA commented on HIVE-20552: -------------------------------- | (/) *{color:green}+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:green}+1{color} | {color:green} mvninstall {color} | {color:green} 8m 25s{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 43s{color} | {color:green} master passed {color} | | {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 4m 4s{color} | {color:blue} ql in master has 2326 extant Findbugs warnings. {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 57s{color} | {color:green} master passed {color} | || || || || {color:brown} Patch Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 25s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 8s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 8s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 44s{color} | {color:green} ql: The patch generated 0 new + 300 unchanged - 3 fixed = 300 total (was 303) {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} 4m 19s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 58s{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} 24m 38s{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-13912/dev-support/hive-personality.sh | | git revision | master / 487714a | | Default Java | 1.8.0_111 | | findbugs | v3.0.0 | | modules | C: ql U: ql | | Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-13912/yetus.txt | | Powered by | Apache Yetus http://yetus.apache.org | This message was automatically generated. > Get Schema from LogicalPlan faster > ---------------------------------- > > Key: HIVE-20552 > URL: https://issues.apache.org/jira/browse/HIVE-20552 > Project: Hive > Issue Type: Improvement > Reporter: Teddy Choi > Assignee: Teddy Choi > Priority: Major > Labels: pull-request-available > Attachments: HIVE-20552.1.patch, HIVE-20552.2.patch, > HIVE-20552.3.patch > > > To get the schema of a query faster, it currently needs to compile, optimize, > and generate a TezPlan, which creates extra overhead when only the > LogicalPlan is needed. > 1. Copy the method \{{HiveMaterializedViewsRegistry.parseQuery}}, making it > \{{public static}} and putting it in a utility class. > 2. Change the return statement of the method to \{{return > analyzer.getResultSchema();}} > 3. Change the return type of the method to \{{List<FieldSchema>}} > 4. Call the new method from \{{GenericUDTFGetSplits.createPlanFragment}} > replacing the current code which does this: > {code} > if(num == 0) { > //Schema only > return new PlanFragment(null, schema, null); > } > {code} > moving the call earlier in \{{getPlanFragment}} ... right after the HiveConf > is created ... bypassing the code that uses \{{HiveTxnManager}} and > \{{Driver}}. > 5. Convert the \{{List<FieldSchema>}} to > \{{org.apache.hadoop.hive.llap.Schema}}. > 6. return from \{{getPlanFragment}} by returning \{{new PlanFragment(null, > schema, null)}} -- This message was sent by Atlassian JIRA (v7.6.3#76005)