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https://issues.apache.org/jira/browse/HIVE-22102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16906230#comment-16906230
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Hive QA commented on HIVE-22102:
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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:green}+1{color} | {color:green} mvninstall {color} | {color:green} 8m
14s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
24s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
13s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 0m
40s{color} | {color:blue} service in master has 48 extant Findbugs warnings.
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| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
18s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
25s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
23s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
23s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
13s{color} | {color:green} the patch passed {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
46s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
17s{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.
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| {color:black}{color} | {color:black} {color} | {color:black} 12m 34s{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
3.16.43-2+deb8u5 (2017-09-19) x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/data/hiveptest/working/yetus_PreCommit-HIVE-Build-18324/dev-support/hive-personality.sh
|
| git revision | master / f9a25ed |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| modules | C: service U: service |
| Console output |
http://104.198.109.242/logs//PreCommit-HIVE-Build-18324/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> Reduce HMS call when createing HiveSession
> ------------------------------------------
>
> Key: HIVE-22102
> URL: https://issues.apache.org/jira/browse/HIVE-22102
> Project: Hive
> Issue Type: Improvement
> Components: HiveServer2
> Reporter: Rajesh Balamohan
> Priority: Trivial
> Attachments: HIVE-22102.1.patch
>
>
> When establishing HiveSession, it ends up configuring session
> variables/settings.
> As part of it, it ends up checking the database details.
> [https://github.com/apache/hive/blob/master/service/src/java/org/apache/hive/service/cli/session/HiveSessionImpl.java#L314]
> Even if it is `default` DB, it ends up making this check. In corner cases,
> these calls turn out to be expensive.
> {noformat}
> 2019-08-13T03:16:57,189 INFO [b42ba57f-1740-4174-855d-4e3f08319ca5
> HiveServer2-Handler-Pool: Thread-1552313] metadata.Hive: Total time spent in
> this metastore function was greater than 1000ms : getDatabase_(String, )=13265
> {noformat}
> We can just skip this check if its `DEFAULT_DATABASE_NAME` (default) DB. This
> may not be an issue for CachedStore.
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