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https://issues.apache.org/jira/browse/HDFS-9574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15088673#comment-15088673
 ] 

Hadoop QA commented on HDFS-9574:
---------------------------------

| (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 0s 
{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 2 new or modified test 
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 8m 
39s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 50s 
{color} | {color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 50s 
{color} | {color:green} trunk passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 
34s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m 40s 
{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
31s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 
13s {color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 46s 
{color} | {color:green} trunk passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 2m 29s 
{color} | {color:green} trunk passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 
23s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 38s 
{color} | {color:green} the patch passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 38s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 42s 
{color} | {color:green} the patch passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 43s 
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 0m 33s 
{color} | {color:red} Patch generated 3 new checkstyle issues in 
hadoop-hdfs-project (total was 692, now 690). {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m 33s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
25s {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 1 line(s) that end in whitespace. Use git 
apply --whitespace=fix. {color} |
| {color:green}+1{color} | {color:green} xml {color} | {color:green} 0m 0s 
{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 
31s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 36s 
{color} | {color:green} the patch passed with JDK v1.8.0_66 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 2m 27s 
{color} | {color:green} the patch passed with JDK v1.7.0_91 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 53s 
{color} | {color:green} hadoop-hdfs-client in the patch passed with JDK 
v1.8.0_66. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 71m 5s {color} 
| {color:red} hadoop-hdfs in the patch failed with JDK v1.8.0_66. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 56s 
{color} | {color:green} hadoop-hdfs-client in the patch passed with JDK 
v1.7.0_91. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 68m 6s {color} 
| {color:red} hadoop-hdfs in the patch failed with JDK v1.7.0_91. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 
26s {color} | {color:green} Patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 183m 57s {color} 
| {color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0_66 Failed junit tests | 
hadoop.hdfs.server.datanode.TestBlockScanner |
|   | hadoop.hdfs.server.datanode.TestDataNodeVolumeFailure |
|   | hadoop.hdfs.server.namenode.snapshot.TestSnapshotFileLength |
|   | hadoop.hdfs.server.namenode.snapshot.TestOpenFilesWithSnapshot |
| JDK v1.7.0_91 Failed junit tests | hadoop.hdfs.server.namenode.TestFsck |
|   | hadoop.hdfs.TestSafeMode |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:0ca8df7 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12781107/HDFS-9574.v3.patch |
| JIRA Issue | HDFS-9574 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  xml  |
| uname | Linux 09133d95bfa6 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 / 89022f8 |
| Default Java | 1.7.0_91 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-oracle:1.8.0_66 
/usr/lib/jvm/java-7-openjdk-amd64:1.7.0_91 |
| findbugs | v3.0.0 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HDFS-Build/14062/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HDFS-Build/14062/artifact/patchprocess/whitespace-eol.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/14062/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_66.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/14062/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_91.txt
 |
| unit test logs |  
https://builds.apache.org/job/PreCommit-HDFS-Build/14062/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_66.txt
 
https://builds.apache.org/job/PreCommit-HDFS-Build/14062/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_91.txt
 |
| JDK v1.7.0_91  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/14062/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs 
hadoop-hdfs-project/hadoop-hdfs-client U: hadoop-hdfs-project |
| Max memory used | 75MB |
| Powered by | Apache Yetus 0.2.0-SNAPSHOT   http://yetus.apache.org |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/14062/console |


This message was automatically generated.



> Reduce client failures during datanode restart
> ----------------------------------------------
>
>                 Key: HDFS-9574
>                 URL: https://issues.apache.org/jira/browse/HDFS-9574
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>         Attachments: HDFS-9574.patch, HDFS-9574.v2.patch, HDFS-9574.v3.patch
>
>
> Since DataXceiverServer is initialized before BP is fully up, client requests 
> will fail until the datanode registers.



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