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https://issues.apache.org/jira/browse/HIVE-22888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17059385#comment-17059385
 ] 

Hive QA commented on HIVE-22888:
--------------------------------

| (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}  9m 
 7s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
26s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
23s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  1m 
14s{color} | {color:blue} standalone-metastore/metastore-server in master has 
186 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
20s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
32s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
26s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
26s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 
23s{color} | {color:red} standalone-metastore/metastore-server: The patch 
generated 12 new + 564 unchanged - 38 fixed = 576 total (was 602) {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  1m 
20s{color} | {color:red} standalone-metastore/metastore-server generated 1 new 
+ 185 unchanged - 1 fixed = 186 total (was 186) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
21s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
14s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 15m 15s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:standalone-metastore/metastore-server |
|  |  org.apache.hadoop.hive.metastore.txn.TxnHandler.checkLock(Connection, 
long, long) passes a nonconstant String to an execute or addBatch method on an 
SQL statement  At TxnHandler.java:nonconstant String to an execute or addBatch 
method on an SQL statement  At TxnHandler.java:[line 4435] |
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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-21117/dev-support/hive-personality.sh
 |
| git revision | master / 2baf21b |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| checkstyle | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-21117/yetus/diff-checkstyle-standalone-metastore_metastore-server.txt
 |
| findbugs | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-21117/yetus/new-findbugs-standalone-metastore_metastore-server.html
 |
| modules | C: standalone-metastore/metastore-server U: 
standalone-metastore/metastore-server |
| Console output | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-21117/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Rewrite checkLock inner select with JOIN operator
> -------------------------------------------------
>
>                 Key: HIVE-22888
>                 URL: https://issues.apache.org/jira/browse/HIVE-22888
>             Project: Hive
>          Issue Type: Improvement
>          Components: Locking
>            Reporter: Denys Kuzmenko
>            Assignee: Denys Kuzmenko
>            Priority: Major
>         Attachments: HIVE-22888.1.patch, HIVE-22888.10.patch, 
> HIVE-22888.2.patch, HIVE-22888.3.patch, HIVE-22888.4.patch, 
> HIVE-22888.5.patch, HIVE-22888.6.patch, HIVE-22888.8.patch, 
> HIVE-22888.9.patch, acid-lock-perf-test.pdf
>
>
> - Created extra (db, tbl, part) index on HIVE_LOCKS table;
> - Replaced inner select under checkLocks using multiple IN statements with 
> JOIN operator; 
> generated query looks like :
> {code}
> SELECT LS.* FROM (
>     SELECT HL_LOCK_EXT_ID, HL_DB, HL_TABLE, HL_PARTITION, HL_LOCK_STATE, 
> HL_LOCK_TYPE FROM HIVE_LOCKS
>     WHERE HL_LOCK_EXT_ID < 333) LS
> INNER JOIN (
>     SELECT HL_DB, HL_TABLE, HL_PARTITION, HL_LOCK_TYPE FROM HIVE_LOCKS WHERE 
> HL_LOCK_EXT_ID = 333) LBC
> ON LS.HL_DB = LBC.HL_DB
>     AND (LS.HL_TABLE IS NULL OR LBC.HL_TABLE IS NULL OR LS.HL_TABLE = 
> LBC.HL_TABLE
>     AND (LS.HL_PARTITION IS NULL OR LBC.HL_PARTITION IS NULL OR 
> LS.HL_PARTITION = LBC.HL_PARTITION))
> WHERE  (LBC.HL_TXNID = 0 OR LS.HL_TXNID != LBC.HL_TXNID) 
>     AND (LBC.HL_LOCK_TYPE='e'
>            AND !(LS.HL_TABLE IS NULL AND LS.HL_LOCK_TYPE='r' AND LBC.HL_TABLE 
> IS NOT NULL )
>     OR LBC.HL_LOCK_TYPE='w' AND LS.HL_LOCK_TYPE IN ('w','e')
>     OR LBC.HL_LOCK_TYPE='r' AND LS.HL_LOCK_TYPE='e'
>            AND !(LS.HL_TABLE IS NOT NULL AND LBC.HL_TABLE IS NULL))
> LIMIT 1;
> {code}



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