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https://issues.apache.org/jira/browse/HBASE-18131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16160644#comment-16160644
 ] 

Hadoop QA commented on HBASE-18131:
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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}  8m 
48s{color} | {color:blue} Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green}  0m  
0s{color} | {color:green} Patch does not have any anti-patterns. {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:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
41s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  3m 
59s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m 
34s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
32s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
50s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  4m 
58s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  
3s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
19s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red}  0m 
15s{color} | {color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} mvninstall {color} | {color:red}  0m 
22s{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m 
14s{color} | {color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} compile {color} | {color:red}  0m 
23s{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:red}-1{color} | {color:red} cc {color} | {color:red}  0m 14s{color} | 
{color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} cc {color} | {color:red}  0m 23s{color} | 
{color:red} hbase-server in the patch failed. {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  0m 14s{color} 
| {color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  0m 23s{color} 
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
31s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
48s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} rubocop {color} | {color:red}  0m  
9s{color} | {color:red} The patch generated 7 new + 347 unchanged - 1 fixed = 
354 total (was 348) {color} |
| {color:red}-1{color} | {color:red} ruby-lint {color} | {color:red}  0m  
5s{color} | {color:red} The patch generated 14 new + 726 unchanged - 0 fixed = 
740 total (was 726) {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  1m 
13s{color} | {color:red} The patch causes 28 errors with Hadoop v2.6.1. {color} 
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| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  2m 
12s{color} | {color:red} The patch causes 28 errors with Hadoop v2.6.2. {color} 
|
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  3m 
10s{color} | {color:red} The patch causes 28 errors with Hadoop v2.6.3. {color} 
|
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  4m  
9s{color} | {color:red} The patch causes 28 errors with Hadoop v2.6.4. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  5m  
6s{color} | {color:red} The patch causes 28 errors with Hadoop v2.6.5. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  6m  
6s{color} | {color:red} The patch causes 28 errors with Hadoop v2.7.1. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  7m  
5s{color} | {color:red} The patch causes 28 errors with Hadoop v2.7.2. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  8m  
3s{color} | {color:red} The patch causes 28 errors with Hadoop v2.7.3. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  9m  
2s{color} | {color:red} The patch causes 28 errors with Hadoop v3.0.0-alpha4. 
{color} |
| {color:red}-1{color} | {color:red} hbaseprotoc {color} | {color:red}  0m 
15s{color} | {color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} hbaseprotoc {color} | {color:red}  0m 
22s{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m 
14s{color} | {color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  0m 
23s{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red}  0m 
18s{color} | {color:red} hbase-client generated 4 new + 0 unchanged - 0 fixed = 
4 total (was 0) {color} |
| {color:red}-1{color} | {color:red} javadoc {color} | {color:red}  0m 
26s{color} | {color:red} hbase-server generated 4 new + 0 unchanged - 0 fixed = 
4 total (was 0) {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
26s{color} | {color:green} hbase-protocol-shaded in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  0m 15s{color} 
| {color:red} hbase-client in the patch failed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}  0m 23s{color} 
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  6m 
49s{color} | {color:green} hbase-shell in the patch passed. {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} 50m 19s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=1.11.2 Server=1.11.2 Image:yetus/hbase:5d60123 |
| JIRA Issue | HBASE-18131 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12886334/HBASE-18131.master.v5.patch
 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  
hbaseanti  checkstyle  compile  cc  hbaseprotoc  rubocop  ruby_lint  |
| uname | Linux 242c2736a6f6 3.13.0-129-generic #178-Ubuntu SMP Fri Aug 11 
12:48:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | 
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
 |
| git revision | master / 591d86a |
| Default Java | 1.8.0_144 |
| findbugs | v3.1.0-RC3 |
| mvninstall | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-mvninstall-hbase-client.txt
 |
| mvninstall | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-mvninstall-hbase-server.txt
 |
| compile | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-compile-hbase-client.txt
 |
| compile | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-compile-hbase-server.txt
 |
| cc | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-compile-hbase-client.txt
 |
| cc | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-compile-hbase-server.txt
 |
| javac | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-compile-hbase-client.txt
 |
| javac | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-compile-hbase-server.txt
 |
| rubocop | v0.49.1 |
| rubocop | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/diff-patch-rubocop.txt
 |
| ruby-lint | v2.3.1 |
| ruby-lint | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/diff-patch-ruby-lint.txt
 |
| hbaseprotoc | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-hbaseprotoc-hbase-client.txt
 |
| hbaseprotoc | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-hbaseprotoc-hbase-server.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-findbugs-hbase-client.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-findbugs-hbase-server.txt
 |
| javadoc | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/diff-javadoc-javadoc-hbase-client.txt
 |
| javadoc | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/diff-javadoc-javadoc-hbase-server.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-unit-hbase-client.txt
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/artifact/patchprocess/patch-unit-hbase-server.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/testReport/ |
| modules | C: hbase-protocol-shaded hbase-client hbase-server hbase-shell U: . 
|
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/8550/console |
| Powered by | Apache Yetus 0.4.0   http://yetus.apache.org |


This message was automatically generated.



> Add an hbase shell command to clear deadserver list in ServerManager
> --------------------------------------------------------------------
>
>                 Key: HBASE-18131
>                 URL: https://issues.apache.org/jira/browse/HBASE-18131
>             Project: HBase
>          Issue Type: New Feature
>          Components: Operability
>            Reporter: Yu Li
>            Assignee: Guangxu Cheng
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: HBASE-18131.master.v1.patch, 
> HBASE-18131.master.v2.patch, HBASE-18131.master.v3.patch, 
> HBASE-18131.master.v4.patch, HBASE-18131.master.v5.patch, HBASE-18131.patch
>
>
> Currently if a regionserver is aborted due to fatal error or stopped by 
> operator on purpose, it will be added into {{ServerManager#deadservers}} list 
> and shown as "Dead Servers" in the master UI. This is a valid warn for 
> operators to  notice the self-aborted servers and give a sanity check to 
> avoid further issues. However, after necessary checks, even if operator is 
> sure that the node is decommissioned (such as for repair), there's no way to 
> clear the dead server list except restarting master. See more details in 
> [this 
> discussion|http://mail-archives.apache.org/mod_mbox/hbase-user/201705.mbox/%3CCAM7-19%2BD4MLu2b1R94%2BtWQDspjfny2sCy4Qit8JtCgjvTOZzzg%40mail.gmail.com%3E]
>  in mail list
> Here we propose to add a hbase shell command to allow clearing dead server 
> list in {{ServerManager}} for advanced users, and the command should be 
> executed with caution.



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