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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18715) isolate large query
Date Sun, 03 Sep 2017 04:17:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16151671#comment-16151671
] 

Hadoop QA commented on HBASE-18715:
-----------------------------------

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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 20s{color} | {color:blue}
Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green}  0m  0s{color}
| {color:green} Patch does not have any anti-patterns. {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:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m  0s{color}
| {color:green} The patch appears to include 5 new or modified test files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 33s{color} | {color:blue}
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| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  3m 48s{color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 33s{color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 47s{color}
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| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 55s{color} |
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| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 22s{color} |
{color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 20s{color} | {color:blue}
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| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 41s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 33s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 33s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 44s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  1m  2s{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} hadoopcheck {color} | {color:green} 39m 36s{color}
| {color:green} Patch does not cause any errors with Hadoop 2.6.1 2.6.2 2.6.3 2.6.4 2.6.5
2.7.1 2.7.2 2.7.3 or 3.0.0-alpha4. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  5m 52s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 33s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  2m 29s{color} | {color:green}
hbase-common in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 24s{color} | {color:green}
hbase-hadoop-compat in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 31s{color} | {color:green}
hbase-hadoop2-compat in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}100m 24s{color} | {color:green}
hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  1m  8s{color} | {color:green}
hbase-examples in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  1m 10s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}175m  7s{color} | {color:black}
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|| Subsystem || Report/Notes ||
| Docker | Client=1.12.3 Server=1.12.3 Image:yetus/hbase:47a5614 |
| JIRA Issue | HBASE-18715 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12885114/HBASE-18715-master-v4.patch
|
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  hbaseanti  checkstyle
 compile  |
| uname | Linux da94846ff35a 3.13.0-119-generic #166-Ubuntu SMP Wed May 3 12:18:55 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
|
| git revision | master / 7c51d3f |
| Default Java | 1.8.0_144 |
| findbugs | v3.1.0-RC3 |
|  Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/8444/testReport/ |
| modules | C: hbase-common hbase-hadoop-compat hbase-hadoop2-compat hbase-server hbase-examples
U: . |
| Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/8444/console |
| Powered by | Apache Yetus 0.4.0   http://yetus.apache.org |


This message was automatically generated.



> isolate large query
> -------------------
>
>                 Key: HBASE-18715
>                 URL: https://issues.apache.org/jira/browse/HBASE-18715
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: chenxu
>            Assignee: chenxu
>         Attachments: HBASE-18715-master-v1.patch, HBASE-18715-master-v2.patch, HBASE-18715-master-v3.patch,
HBASE-18715-master-v4.patch, isolate large query.pdf, isolate result.png
>
>
> large queries are very expensive than the general operation, and often delay insensitive.
> if not isolate, Handlers may be all used by the large query,
> lead to _Put_ or _Get_ slowly, so there need be an mechanism to isolate the large query.
> for example we can use a separate _RpcExecutor_ to handle this.
> for the following type of queries we can think it is a large query:
> (1) _Scan_ has no startkey or endkey
> (2) Client call _ResultScanner.next()_ more than a certain threshold
> (3) Client call custom coprocessor which involves large queries(such as _AggregateService_)
> for large queries, RegionServer should meet the following requirements
> (1) dynamic configure if isolate large query is turn on
> (2) setup certain Handlers to deal with large queries only
> (3) in offpeak hours, large queries are not isolate
> (4) dynamic configure if cache Blocks is turn on if the query is a large query



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