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https://issues.apache.org/jira/browse/HDFS-11856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16027814#comment-16027814
 ] 

Hadoop QA commented on HDFS-11856:
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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}  0m 
21s{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 5 new or modified test 
files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
32s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  7m 
19s{color} | {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
32s{color} | {color:green} branch-2 passed with JDK v1.8.0_131 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
31s{color} | {color:green} branch-2 passed with JDK v1.7.0_131 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
40s{color} | {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 
34s{color} | {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
28s{color} | {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 
52s{color} | {color:green} branch-2 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  
1s{color} | {color:green} branch-2 passed with JDK v1.8.0_131 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
28s{color} | {color:green} branch-2 passed with JDK v1.7.0_131 {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m  
9s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
16s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
27s{color} | {color:green} the patch passed with JDK v1.8.0_131 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 
27s{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 v1.7.0_131 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m 
38s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 40s{color} | {color:orange} hadoop-hdfs-project: The patch generated 4 new + 
365 unchanged - 4 fixed = 369 total (was 369) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m 
29s{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:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  4m 
33s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  
1s{color} | {color:green} the patch passed with JDK v1.8.0_131 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
28s{color} | {color:green} the patch passed with JDK v1.7.0_131 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  1m 
12s{color} | {color:green} hadoop-hdfs-client in the patch passed with JDK 
v1.7.0_131. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 68m 37s{color} 
| {color:red} hadoop-hdfs in the patch failed with JDK v1.7.0_131. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
19s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}166m 10s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| JDK v1.8.0_131 Failed junit tests | 
hadoop.hdfs.tools.TestDFSZKFailoverController |
| JDK v1.7.0_131 Failed junit tests | 
hadoop.hdfs.server.blockmanagement.TestReplicationPolicyWithUpgradeDomain |
| JDK v1.7.0_131 Timed out junit tests | 
org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting |
|   | org.apache.hadoop.hdfs.server.blockmanagement.TestBlockStatsMXBean |
|   | 
org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureToleration |
|   | org.apache.hadoop.hdfs.server.datanode.TestDataNodeVolumeFailure |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:8515d35 |
| JIRA Issue | HDFS-11856 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12870084/HDFS-11856-02.branch-2.patch
 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  |
| uname | Linux 74ad07e76ae0 3.13.0-106-generic #153-Ubuntu SMP Tue Dec 6 
15:44:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh 
|
| git revision | branch-2 / d36e64b |
| Default Java | 1.7.0_131 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-oracle:1.8.0_131 
/usr/lib/jvm/java-7-openjdk-amd64:1.7.0_131 |
| findbugs | v3.0.0 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HDFS-Build/19658/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/19658/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_131.txt
 |
| JDK v1.7.0_131  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/19658/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs-client 
hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/19658/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Ability to re-add Upgrading Nodes (remote) to pipeline for future pipeline 
> updates
> ----------------------------------------------------------------------------------
>
>                 Key: HDFS-11856
>                 URL: https://issues.apache.org/jira/browse/HDFS-11856
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client, rolling upgrades
>    Affects Versions: 2.7.3
>            Reporter: Vinayakumar B
>            Assignee: Vinayakumar B
>         Attachments: HDFS-11856-01.patch, HDFS-11856-02.branch-2.patch, 
> HDFS-11856-02.patch, HDFS-11856-branch-2-02.patch, 
> HDFS-11856-branch-2.7-02.patch, HDFS-11856-branch-2.8-02.patch
>
>
> During rolling upgrade if the DN gets restarted, then it will send special 
> OOB_RESTART status to all streams opened for write.
> 1. Local clients will wait for 30 seconds to datanode to come back.
> 2. Remote clients will consider these nodes as bad nodes and continue with 
> pipeline recoveries and write. These restarted nodes will be considered as 
> bad, and will be excluded for lifetime of stream.
> In case of small cluster, where total nodes itself is 3, each time a remote 
> node restarts for upgrade, it will be excluded.
> So a stream writing to 3 nodes initial, will end-up writing to only one node 
> at the end, there are no other nodes to replace.



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