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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11294) libhdfs++: Segfault in HA failover if DNS lookup for both Namenodes fails
Date Wed, 13 Sep 2017 01:55:01 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16164026#comment-16164026
] 

Hadoop QA commented on HDFS-11294:
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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} 13m  2s{color} | {color:blue}
Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {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} HDFS-8707 Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 17m  1s{color}
| {color:green} HDFS-8707 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 14m 10s{color} |
{color:green} HDFS-8707 passed with JDK v1.8.0_144 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 15m  2s{color} |
{color:green} HDFS-8707 passed with JDK v1.7.0_151 {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  7m 28s{color} |
{color:green} HDFS-8707 passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 28s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 15m 39s{color} |
{color:green} the patch passed with JDK v1.8.0_144 {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green} 15m 39s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 15m 39s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 15m 47s{color} |
{color:green} the patch passed with JDK v1.7.0_151 {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green} 15m 47s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 15m 47s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  7m 57s{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:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}274m  0s{color} | {color:red}
hadoop-hdfs-native-client in the patch failed with JDK v1.7.0_151. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 27s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}413m 31s{color} | {color:black}
{color} |
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|| Reason || Tests ||
| JDK v1.7.0_151 Failed CTEST tests | test_hdfs_ext_hdfspp_test_shim_static |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:3117e2a |
| JIRA Issue | HDFS-11294 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12886700/HDFS-11294.HDFS-8707.002.patch
|
| Optional Tests |  asflicense  compile  cc  mvnsite  javac  unit  |
| uname | Linux 955e1287e049 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12 13:48:03 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | HDFS-8707 / 3f92e63 |
| Default Java | 1.7.0_151 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-oracle:1.8.0_144 /usr/lib/jvm/java-7-openjdk-amd64:1.7.0_151
|
| CTEST | https://builds.apache.org/job/PreCommit-HDFS-Build/21101/artifact/patchprocess/patch-hadoop-hdfs-project_hadoop-hdfs-native-client-jdk1.7.0_151-ctest.txt
|
| unit | https://builds.apache.org/job/PreCommit-HDFS-Build/21101/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-native-client-jdk1.7.0_151.txt
|
| JDK v1.7.0_151  Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/21101/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/21101/console |
| Powered by | Apache Yetus 0.6.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> libhdfs++: Segfault in HA failover if DNS lookup for both Namenodes fails
> -------------------------------------------------------------------------
>
>                 Key: HDFS-11294
>                 URL: https://issues.apache.org/jira/browse/HDFS-11294
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs-client
>            Reporter: James Clampffer
>            Assignee: James Clampffer
>         Attachments: HDFS-11294.HDFS-8707.001.patch, HDFS-11294.HDFS-8707.002.patch,
HDFS-8707.HDFS-11294.000.patch
>
>
> Hit while doing more manual testing on HDFS-11028.
> The HANamenodeTracker takes an asio endpoint to figure out what endpoint on the other
node to try next during a failover.  This is done by passing the element at index 0 from endpoints
(a std::vector<asio endpoint>).
> When DNS fails the endpoints vector for that node will be empty so the iterator returned
by endpoints\[0\] is just a null pointer that gets dereferenced and causes a segfault.



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