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https://issues.apache.org/jira/browse/HBASE-17973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15991063#comment-15991063
 ] 

Hadoop QA commented on HBASE-17973:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 23s 
{color} | {color:blue} Docker mode activated. {color} |
| {color:blue}0{color} | {color:blue} rubocop {color} | {color:blue} 0m 0s 
{color} | {color:blue} rubocop was not available. {color} |
| {color:blue}0{color} | {color:blue} ruby-lint {color} | {color:blue} 0m 0s 
{color} | {color:blue} Ruby-lint was not available. {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} 6m 
7s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
25s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 13s 
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 
23s {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} hadoopcheck {color} | {color:green} 
60m 51s {color} | {color:green} Patch does not cause any errors with Hadoop 
2.6.1 2.6.2 2.6.3 2.6.4 2.6.5 2.7.1 2.7.2 2.7.3 or 3.0.0-alpha2. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 15s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 5m 11s 
{color} | {color:green} hbase-shell in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 
13s {color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 74m 46s {color} 
| {color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.03.0-ce Server=17.03.0-ce Image:yetus/hbase:8d52d23 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12865768/HBASE-17973.002.patch 
|
| JIRA Issue | HBASE-17973 |
| Optional Tests |  asflicense  javac  javadoc  unit  rubocop  ruby_lint  |
| uname | Linux da4a2e21296c 4.8.3-std-1 #1 SMP Fri Oct 21 11:15:43 UTC 2016 
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 / 94c14ad |
| Default Java | 1.8.0_121 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/6645/testReport/ |
| modules | C: hbase-shell U: hbase-shell |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/6645/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> Create shell command to identify regions with poor locality
> -----------------------------------------------------------
>
>                 Key: HBASE-17973
>                 URL: https://issues.apache.org/jira/browse/HBASE-17973
>             Project: HBase
>          Issue Type: Improvement
>          Components: shell
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>             Fix For: 2.0.0
>
>         Attachments: HBASE-17973.001.patch, HBASE-17973.002.patch
>
>
> The data locality of regions often plays a large role in the efficiency of 
> HBase. Compactions are also expensive to execute, especially on very large 
> tables. The balancer can do a good job trying to maintain locality (when 
> tuned properly), but it is not perfect.
> This creates a less-than-desirable situation where it's a costly operation to 
> take a cluster with spotty poor locality (e.g. a small percentage of 
> regionservers with poor locality).
> We already have this information available via the {{ClusterStatus}} proto. 
> We can easily write a shell command that can present regions which are 
> lacking a certain percentage of locality.



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