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Date: Wed, 29 Nov 2017 09:33:01 +0000 (UTC)
From: "Hadoop QA (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.13119133.1510902206000.343971.1511947981520@Atlassian.JIRA>
In-Reply-To: <JIRA.13119133.1510902206000@Atlassian.JIRA>
References: <JIRA.13119133.1510902206000@Atlassian.JIRA> <JIRA.13119133.1510902206666@jira-lw-us.apache.org>
Subject: [jira] [Commented] (HBASE-19290) Reduce zk request when doing split
 log
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archived-at: Wed, 29 Nov 2017 09:33:09 -0000


    [ https://issues.apache.org/jira/browse/HBASE-19290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16270476#comment-16270476 ] 

Hadoop QA commented on HBASE-19290:
-----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 11s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  0m  0s{color} | {color:blue} Findbugs executables are not available. {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:red}-1{color} | {color:red} test4tests {color} | {color:red}  0m  0s{color} | {color:red} The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  4m 22s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 40s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 54s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  5m 22s{color} | {color:green} branch has no errors when building our shaded downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 24s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  4m 26s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 37s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 37s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 54s{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} shadedjars {color} | {color:green}  4m 26s{color} | {color:green} patch has no errors when building our shaded downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 47m 55s{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 2.7.4 or 3.0.0-alpha4. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 26s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 86m  7s{color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 22s{color} | {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}152m  1s{color} | {color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:eee3b01 |
| JIRA Issue | HBASE-19290 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12899765/HBASE-19290.master.006.patch |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  shadedjars  hadoopcheck  hbaseanti  checkstyle  compile  |
| uname | Linux d9c5afafd53b 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12 13:48:03 UTC 2016 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 / e67a3699c4 |
| maven | version: Apache Maven 3.5.2 (138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T07:58:13Z) |
| Default Java | 1.8.0_151 |
|  Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/10105/testReport/ |
| modules | C: hbase-server U: hbase-server |
| Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/10105/console |
| Powered by | Apache Yetus 0.6.0   http://yetus.apache.org |


This message was automatically generated.


> Reduce zk request when doing split log
> --------------------------------------
>
>                 Key: HBASE-19290
>                 URL: https://issues.apache.org/jira/browse/HBASE-19290
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: binlijin
>            Assignee: binlijin
>         Attachments: HBASE-19290.master.001.patch, HBASE-19290.master.002.patch, HBASE-19290.master.003.patch, HBASE-19290.master.004.patch, HBASE-19290.master.005.patch, HBASE-19290.master.006.patch, HBASE-19290.master.006.patch
>
>
> We observe once the cluster has 1000+ nodes and when hundreds of nodes abort and doing split log, the split is very very slow, and we find the regionserver and master wait on the zookeeper response, so we need to reduce zookeeper request and pressure for big cluster.
> (1) Reduce request to rsZNode, every time calculateAvailableSplitters will get rsZNode's children from zookeeper, when cluster is huge, this is heavy. This patch reduce the request. 
> (2) When the regionserver has max split tasks running, it may still trying to grab task and issue zookeeper request, we should sleep and wait until we can grab tasks again.  


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