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https://issues.apache.org/jira/browse/HDFS-9390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15579345#comment-15579345
 ] 

Hadoop QA commented on HDFS-9390:
---------------------------------

| (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 
20s{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 7 new or modified test 
files. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  6m 
46s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
44s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
40s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
50s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
12s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
41s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
38s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
44s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
43s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
43s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
35s{color} | {color:green} hadoop-hdfs-project/hadoop-hdfs: The patch generated 
0 new + 1062 unchanged - 16 fixed = 1062 total (was 1078) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
50s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
 9s{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} xml {color} | {color:green}  0m  
1s{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 
48s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
39s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 76m 26s{color} 
| {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
18s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 95m 27s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hdfs.server.namenode.ha.TestDFSUpgradeWithHA |
|   | hadoop.hdfs.server.datanode.TestDataNodeVolumeFailureReporting |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:9560f25 |
| JIRA Issue | HDFS-9390 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12833631/HDFS-9390-5.patch |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  
unit  findbugs  checkstyle  xml  |
| uname | Linux 0be78b44f76d 3.13.0-96-generic #143-Ubuntu SMP Mon Aug 29 
20:15:20 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh 
|
| git revision | trunk / 1f304b0 |
| Default Java | 1.8.0_101 |
| findbugs | v3.0.0 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/17174/artifact/patchprocess/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/17174/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: 
hadoop-hdfs-project/hadoop-hdfs |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/17174/console |
| Powered by | Apache Yetus 0.4.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Block management for maintenance states
> ---------------------------------------
>
>                 Key: HDFS-9390
>                 URL: https://issues.apache.org/jira/browse/HDFS-9390
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Ming Ma
>            Assignee: Ming Ma
>         Attachments: HDFS-9390-2.patch, HDFS-9390-3.patch, HDFS-9390-4.patch, 
> HDFS-9390-5.patch, HDFS-9390.patch
>
>
> When a node is transitioned to/stay in/transitioned out of maintenance state, 
> we need to make sure blocks w.r.t. that nodes are properly handled.
> * When nodes are put into maintenance, it will first go to 
> ENTERING_MAINTENANCE, and make sure blocks are minimally replicated before 
> the nodes are transitioned to IN_MAINTENANCE.
> * Do not replica blocks when nodes are in maintenance states. Maintenance 
> replica will remain in BlockMaps and thus is still considered valid from 
> block replication point of view. In other words, putting a node to 
> “maintenance” mode won’t trigger BlockManager to replicate its blocks.
> * Do not invalidate replicas on node under maintenance. After any file's 
> replication factor is reduced, NN needs to invalidate some replicas. It 
> should exclude nodes under maintenance in the handling.
> * Do not put IN_MAINTENANCE replicas in LocatedBlock for read operation.
> * Do not allocate any new block on nodes under maintenance.
> * Have Balancer exclude nodes under maintenance.
> * Exclude nodes under maintenance for DN cache.



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