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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19024) provide a configurable option to hsync WAL edits to the disk for better durability
Date Sat, 28 Oct 2017 12:28:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19024?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16223463#comment-16223463
] 

Hadoop QA commented on HBASE-19024:
-----------------------------------

| (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 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 13 new or modified test files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 22s{color} | {color:blue}
Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  2m  4s{color}
| {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 49s{color} |
{color:green} branch-1 passed with JDK v1.8.0_141 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 57s{color} |
{color:green} branch-1 passed with JDK v1.7.0_151 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 48s{color}
| {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 29s{color}
| {color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  3m 53s{color}
| {color:green} branch has no errors when building our shaded downstream artifacts. {color}
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| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m 43s{color} |
{color:green} branch-1 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 40s{color} |
{color:green} branch-1 passed with JDK v1.8.0_141 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 54s{color} |
{color:green} branch-1 passed with JDK v1.7.0_151 {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 14s{color} | {color:blue}
Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 56s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 48s{color} |
{color:green} the patch passed with JDK v1.8.0_141 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 48s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 54s{color} |
{color:green} the patch passed with JDK v1.7.0_151 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 53s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 45s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 30s{color}
| {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red}  0m  0s{color} | {color:red}
The patch has 12 line(s) that end in whitespace. Use git apply --whitespace=fix <<patch_file>>.
Refer https://git-scm.com/docs/git-apply {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red}  0m  0s{color} | {color:red}
The patch 1 line(s) with tabs. {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  2m 36s{color}
| {color:green} patch has no errors when building our shaded downstream artifacts. {color}
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| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 27m 40s{color}
| {color:green} Patch does not cause any errors with Hadoop 2.4.0 2.4.1 2.5.0 2.5.1 2.5.2
2.6.1 2.6.2 2.6.3 2.6.4 2.6.5 2.7.1 2.7.2 2.7.3. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 15s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 40s{color} |
{color:green} the patch passed with JDK v1.8.0_141 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 51s{color} |
{color:green} the patch passed with JDK v1.7.0_151 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  2m 18s{color} | {color:green}
hbase-common in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 22m 39s{color} | {color:red}
hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 20s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 76m 20s{color} | {color:black}
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|| Reason || Tests ||
| Failed junit tests | hadoop.hbase.client.TestRollbackFromClient |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:4bf71c3 |
| JIRA Issue | HBASE-19024 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12894550/branch-1.branch-1.patch
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| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  shadedjars  hadoopcheck  hbaseanti
 checkstyle  compile  |
| uname | Linux fceb643b2bba 3.13.0-116-generic #163-Ubuntu SMP Fri Mar 31 14:13:22 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 | branch-1 / 0d26ca7 |
| Default Java | 1.7.0_151 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-openjdk-amd64:1.8.0_141 /usr/lib/jvm/java-7-openjdk-amd64:1.7.0_151
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| findbugs | v3.0.0 |
| whitespace | https://builds.apache.org/job/PreCommit-HBASE-Build/9471/artifact/patchprocess/whitespace-eol.txt
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| whitespace | https://builds.apache.org/job/PreCommit-HBASE-Build/9471/artifact/patchprocess/whitespace-tabs.txt
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| unit | https://builds.apache.org/job/PreCommit-HBASE-Build/9471/artifact/patchprocess/patch-unit-hbase-server.txt
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|  Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/9471/testReport/ |
| modules | C: hbase-common hbase-server U: . |
| Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/9471/console |
| Powered by | Apache Yetus 0.4.0   http://yetus.apache.org |


This message was automatically generated.



> provide a configurable option to hsync WAL edits to the disk for better durability
> ----------------------------------------------------------------------------------
>
>                 Key: HBASE-19024
>                 URL: https://issues.apache.org/jira/browse/HBASE-19024
>             Project: HBase
>          Issue Type: Improvement
>          Components: wal
>         Environment: 
>            Reporter: Vikas Vishwakarma
>            Assignee: Harshal Jain
>         Attachments: branch-1.branch-1.patch, master.patch, master.v2.patch
>
>
> At present we do not have an option to hsync WAL edits to the disk for better durability.
In our local tests we see 10-15% latency impact of using hsync instead of hflush which is
not very high.  
> We should have a configurable option to hysnc WAL edits instead of just sync/hflush which
will call the corresponding API on the hadoop side. Currently HBase handles both SYNC_WAL
and FSYNC_WAL as the same calling FSDataOutputStream sync/hflush on the hadoop side. This
can be modified to let FSYNC_WAL call hsync on the hadoop side instead of sync/hflush. We
can keep the default value to sync as the current behavior and hsync can be enabled based
on explicit configuration.



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