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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9890) libhdfs++: Add test suite to simulate network issues
Date Wed, 20 Apr 2016 16:30:25 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15250193#comment-15250193
] 

Hadoop QA commented on HDFS-9890:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 19m 16s {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: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:green}+1{color} | {color:green} mvninstall {color} | {color:green} 10m 12s {color}
| {color:green} HDFS-8707 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 5m 43s {color} |
{color:green} HDFS-8707 passed with JDK v1.8.0_77 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 6m 1s {color} | {color:green}
HDFS-8707 passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 21s {color} |
{color:green} HDFS-8707 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 16s {color}
| {color:green} HDFS-8707 passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 12s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 5m 54s {color} |
{color:green} the patch passed with JDK v1.8.0_77 {color} |
| {color:red}-1{color} | {color:red} cc {color} | {color:red} 28m 54s {color} | {color:red}
hadoop-hdfs-project_hadoop-hdfs-native-client-jdk1.8.0_77 with JDK v1.8.0_77 generated 41
new + 29 unchanged - 0 fixed = 70 total (was 29) {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green} 5m 54s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 5m 54s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 5m 52s {color} |
{color:green} the patch passed with JDK v1.7.0_95 {color} |
| {color:red}-1{color} | {color:red} cc {color} | {color:red} 34m 46s {color} | {color:red}
hadoop-hdfs-project_hadoop-hdfs-native-client-jdk1.7.0_95 with JDK v1.7.0_95 generated 41
new + 29 unchanged - 0 fixed = 70 total (was 29) {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green} 5m 52s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 5m 52s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 17s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 12s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 0s {color}
| {color:green} Patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 6m 26s {color} | {color:green}
hadoop-hdfs-native-client in the patch passed with JDK v1.8.0_77. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 6m 5s {color} | {color:green}
hadoop-hdfs-native-client in the patch passed with JDK v1.7.0_95. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 18s {color}
| {color:green} Patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 69m 28s {color} | {color:black}
{color} |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:0cf5e66 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12799772/HDFS-9890.HDFS-8707.002.patch
|
| JIRA Issue | HDFS-9890 |
| Optional Tests |  asflicense  compile  cc  mvnsite  javac  unit  |
| uname | Linux e7dd95e3e176 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 | HDFS-8707 / d8653c8 |
| Default Java | 1.7.0_95 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-oracle:1.8.0_77 /usr/lib/jvm/java-7-openjdk-amd64:1.7.0_95
|
| cc | hadoop-hdfs-project_hadoop-hdfs-native-client-jdk1.8.0_77: https://builds.apache.org/job/PreCommit-HDFS-Build/15219/artifact/patchprocess/diff-compile-cc-hadoop-hdfs-project_hadoop-hdfs-native-client-jdk1.8.0_77.txt
|
| cc | hadoop-hdfs-project_hadoop-hdfs-native-client-jdk1.7.0_95: https://builds.apache.org/job/PreCommit-HDFS-Build/15219/artifact/patchprocess/diff-compile-cc-hadoop-hdfs-project_hadoop-hdfs-native-client-jdk1.7.0_95.txt
|
| JDK v1.7.0_95  Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/15219/testReport/
|
| modules | C: hadoop-hdfs-project/hadoop-hdfs-native-client U: hadoop-hdfs-project/hadoop-hdfs-native-client
|
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/15219/console |
| Powered by | Apache Yetus 0.2.0   http://yetus.apache.org |


This message was automatically generated.



> libhdfs++: Add test suite to simulate network issues
> ----------------------------------------------------
>
>                 Key: HDFS-9890
>                 URL: https://issues.apache.org/jira/browse/HDFS-9890
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs-client
>            Reporter: James Clampffer
>            Assignee: Xiaowei Zhu
>         Attachments: HDFS-9890.HDFS-8707.000.patch, HDFS-9890.HDFS-8707.001.patch, HDFS-9890.HDFS-8707.002.patch
>
>
> I propose adding a test suite to simulate various network issues/failures in order to
get good test coverage on some of the retry paths that aren't easy to hit in mock unit tests.
> At the moment the only things that hit the retry paths are the gmock unit tests.  The
gmock are only as good as their mock implementations which do a great job of simulating protocol
correctness but not more complex interactions.  They also can't really simulate the types
of lock contention and subtle memory stomps that show up while doing hundreds or thousands
of concurrent reads.   We should add a new minidfscluster test that focuses on heavy read/seek
load and then randomly convert error codes returned by network functions into errors.
> List of things to simulate(while heavily loaded), roughly in order of how badly I think
they need to be tested at the moment:
> -Rpc connection disconnect
> -Rpc connection slowed down enough to cause a timeout and trigger retry
> -DN connection disconnect



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