Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Date: Fri, 29 Jul 2016 21:21:20 +0000 (UTC)
From: "Hadoop QA (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12993387.1469745277000.172649.1469827280742@Atlassian.JIRA>
In-Reply-To: <JIRA.12993387.1469745277000@Atlassian.JIRA>
References: <JIRA.12993387.1469745277000@Atlassian.JIRA> <JIRA.12993387.1469745277753@arcas>
Subject: [jira] [Commented] (HDFS-10702) Add a Client API and Proxy Provider
 to enable stale read from Standby
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
archived-at: Fri, 29 Jul 2016 21:21:22 -0000


    [ https://issues.apache.org/jira/browse/HDFS-10702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15400018#comment-15400018 ] 

Hadoop QA commented on HDFS-10702:
----------------------------------

| (x) *{color:red}-1 overall{color}* |
\\
\\
|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 13s{color} | {color:blue} Docker mode activated. {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 4 new or modified test files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 17s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 50s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  8m 19s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 54s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  2m 58s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 44s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  5m 36s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  2m 21s{color} | {color:green} trunk passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 16s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  2m 26s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  8m 33s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green}  8m 33s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  8m 33s{color} | {color:red} root generated 1 new + 709 unchanged - 0 fixed = 710 total (was 709) {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  1m 43s{color} | {color:orange} root: The patch generated 82 new + 1029 unchanged - 2 fixed = 1111 total (was 1031) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  2m 32s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 37s{color} | {color:green} the patch passed {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} findbugs {color} | {color:green}  5m 12s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  2m  5s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 19m 13s{color} | {color:red} hadoop-common in the patch failed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  1m  8s{color} | {color:green} hadoop-hdfs-client in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 66m 25s{color} | {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 26s{color} | {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}141m 59s{color} | {color:black} {color} |
\\
\\
|| Reason || Tests ||
| Failed junit tests | hadoop.hdfs.server.namenode.ha.TestSyncInfo |
|   | hadoop.hdfs.TestFileChecksum |
|   | hadoop.hdfs.server.namenode.TestEditLog |
| Timed out junit tests | org.apache.hadoop.http.TestHttpServerLifecycle |
\\
\\
|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:9560f25 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12821051/HDFS-10702.002.patch |
| JIRA Issue | HDFS-10702 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  findbugs  checkstyle  cc  |
| uname | Linux 593dbc1aeb19 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep 3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 95f2b98 |
| Default Java | 1.8.0_101 |
| findbugs | v3.0.0 |
| javac | https://builds.apache.org/job/PreCommit-HDFS-Build/16257/artifact/patchprocess/diff-compile-javac-root.txt |
| checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/16257/artifact/patchprocess/diff-checkstyle-root.txt |
| whitespace | https://builds.apache.org/job/PreCommit-HDFS-Build/16257/artifact/patchprocess/whitespace-tabs.txt |
| unit | https://builds.apache.org/job/PreCommit-HDFS-Build/16257/artifact/patchprocess/patch-unit-hadoop-common-project_hadoop-common.txt |
| unit | https://builds.apache.org/job/PreCommit-HDFS-Build/16257/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt |
|  Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/16257/testReport/ |
| modules | C: hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs-client hadoop-hdfs-project/hadoop-hdfs U: . |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/16257/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.


> Add a Client API and Proxy Provider to enable stale read from Standby
> ---------------------------------------------------------------------
>
>                 Key: HDFS-10702
>                 URL: https://issues.apache.org/jira/browse/HDFS-10702
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Jiayi Zhou
>            Assignee: Jiayi Zhou
>            Priority: Minor
>         Attachments: HDFS-10702.001.patch, HDFS-10702.002.patch, StaleReadfromStandbyNN.pdf
>
>
> Currently, clients must always talk to the active NameNode when performing any metadata operation, which means active NameNode could be a bottleneck for scalability. One way to solve this problem is to send read-only operations to Standby NameNode. The disadvantage is that it might be a stale read. 
> Here, I'm thinking of adding a Client API to enable/disable stale read from Standby which gives Client the power to set the staleness restriction.


--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org