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https://issues.apache.org/jira/browse/HDFS-10857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15504990#comment-15504990
 ] 

Hadoop QA commented on HDFS-10857:
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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} 14m 
29s{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 1 new or modified test 
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  8m 
 1s{color} | {color:green} branch-2.6 passed {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m 
49s{color} | {color:red} hadoop-hdfs in branch-2.6 failed with JDK v1.8.0_101. 
{color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m 
50s{color} | {color:red} hadoop-hdfs in branch-2.6 failed with JDK v1.7.0_111. 
{color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
24s{color} | {color:green} branch-2.6 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  
4s{color} | {color:green} branch-2.6 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
17s{color} | {color:green} branch-2.6 passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  3m  
5s{color} | {color:red} hadoop-hdfs-project/hadoop-hdfs in branch-2.6 has 273 
extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
13s{color} | {color:green} branch-2.6 passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  2m  
0s{color} | {color:green} branch-2.6 passed with JDK v1.7.0_111 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
57s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m 
48s{color} | {color:red} hadoop-hdfs in the patch failed with JDK v1.8.0_101. 
{color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  0m 48s{color} 
| {color:red} hadoop-hdfs in the patch failed with JDK v1.8.0_101. {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m 
47s{color} | {color:red} hadoop-hdfs in the patch failed with JDK v1.7.0_111. 
{color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  0m 47s{color} 
| {color:red} hadoop-hdfs in the patch failed with JDK v1.7.0_111. {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
22s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
57s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
13s{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 1347 line(s) that end in whitespace. Use 
git apply --whitespace=fix <<patch_file>>. Refer 
https://git-scm.com/docs/git-apply {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red}  0m 
33s{color} | {color:red} The patch 70 line(s) with tabs. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  3m 
19s{color} | {color:red} hadoop-hdfs-project/hadoop-hdfs generated 1 new + 273 
unchanged - 0 fixed = 274 total (was 273) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
10s{color} | {color:green} the patch passed with JDK v1.8.0_101 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
59s{color} | {color:green} the patch passed with JDK v1.7.0_111 {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  0m 46s{color} 
| {color:red} hadoop-hdfs in the patch failed with JDK v1.7.0_111. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red}  0m 
34s{color} | {color:red} The patch generated 75 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 48m  3s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:hadoop-hdfs-project/hadoop-hdfs |
|  |  Inconsistent synchronization of 
org.apache.hadoop.hdfs.server.datanode.DataNode.dataDirs; locked 71% of time  
Unsynchronized access at DataNode.java:71% of time  Unsynchronized access at 
DataNode.java:[line 3098] |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:44eef0e |
| JIRA Issue | HDFS-10857 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12829277/HDFS-10857.branch-2.6.patch
 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  |
| uname | Linux b65465e9c31e 3.13.0-93-generic #140-Ubuntu SMP Mon Jul 18 
21:21:05 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh 
|
| git revision | branch-2.6 / 2010dd3 |
| Default Java | 1.7.0_111 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-oracle:1.8.0_101 
/usr/lib/jvm/java-7-openjdk-amd64:1.7.0_111 |
| compile | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/branch-compile-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_101.txt
 |
| compile | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/branch-compile-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_111.txt
 |
| findbugs | v1.3.9 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-warnings.html
 |
| compile | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/patch-compile-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_101.txt
 |
| javac | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/patch-compile-hadoop-hdfs-project_hadoop-hdfs-jdk1.8.0_101.txt
 |
| compile | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/patch-compile-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_111.txt
 |
| javac | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/patch-compile-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_111.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/whitespace-eol.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/whitespace-tabs.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/new-findbugs-hadoop-hdfs-project_hadoop-hdfs.html
 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs-jdk1.7.0_111.txt
 |
| JDK v1.7.0_111  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/testReport/ |
| asflicense | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/artifact/patchprocess/patch-asflicense-problems.txt
 |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: 
hadoop-hdfs-project/hadoop-hdfs |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/16798/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Rolling upgrade can make data unavailable when the cluster has many failed 
> volumes
> ----------------------------------------------------------------------------------
>
>                 Key: HDFS-10857
>                 URL: https://issues.apache.org/jira/browse/HDFS-10857
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.6.4
>            Reporter: Kihwal Lee
>            Priority: Critical
>         Attachments: HDFS-10857.branch-2.6.patch
>
>
> When the marker file or trash dir is created or removed during the heartbeat 
> response processing, an {{IOException}} is thrown if tried on a failed 
> volume.   This stops processing of the rest of storage directories and any 
> DNA commands that were part of the heartbeat response.
> While this is happening, the block token key update does not happen and all 
> read and write requests start to fail, until the upgrade is finalized and the 
> DN receives a new key. All it takes is one failed volume. If there are three 
> such nodes in the cluster, it is very likely that some blocks cannot be read. 
> The NN has no idea unlike the common missing blocks scenarios, although the 
> effect is the same.



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