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https://issues.apache.org/jira/browse/HBASE-22459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16851379#comment-16851379
 ] 

HBase QA commented on HBASE-22459:
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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 
40s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {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 2 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
28s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  4m 
15s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m 
37s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  2m 
27s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  4m 
40s{color} | {color:green} branch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  8m 
18s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
33s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
13s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  4m 
13s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m 
46s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green}  2m 
46s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  2m 
46s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  2m 
29s{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} shadedjars {color} | {color:green}  4m 
43s{color} | {color:green} patch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 
17m 55s{color} | {color:green} Patch does not cause any errors with Hadoop 
2.8.5 2.9.2 or 3.0.3 3.1.2. {color} |
| {color:green}+1{color} | {color:green} hbaseprotoc {color} | {color:green}  
2m 36s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 11m 
24s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  2m  
2s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
44s{color} | {color:green} hbase-protocol-shaded in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
32s{color} | {color:green} hbase-hadoop-compat in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
39s{color} | {color:green} hbase-hadoop2-compat in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  0m 
29s{color} | {color:green} hbase-protocol in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  3m 
35s{color} | {color:green} hbase-client in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}262m 39s{color} 
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  2m 
37s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}350m 53s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hbase.quotas.TestQuotaAdmin |
|   | hadoop.hbase.client.TestAsyncTableAdminApi3 |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce base: 
https://builds.apache.org/job/PreCommit-HBASE-Build/451/artifact/patchprocess/Dockerfile
 |
| JIRA Issue | HBASE-22459 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12970212/HBASE-22459.patch |
| Optional Tests |  dupname  asflicense  javac  javadoc  unit  findbugs  
shadedjars  hadoopcheck  hbaseanti  checkstyle  compile  cc  hbaseprotoc  |
| uname | Linux 3fbc5d92fc8d 4.4.0-143-generic #169~14.04.2-Ubuntu SMP Wed Feb 
13 15:00:41 UTC 2019 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/hbase-personality.sh |
| git revision | master / ca00cbeed2 |
| maven | version: Apache Maven 3.5.4 
(1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z) |
| Default Java | 1.8.0_181 |
| findbugs | v3.1.11 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/451/artifact/patchprocess/patch-unit-hbase-server.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/451/testReport/ |
| Max. process+thread count | 4961 (vs. ulimit of 10000) |
| modules | C: hbase-protocol-shaded hbase-hadoop-compat hbase-hadoop2-compat 
hbase-protocol hbase-client hbase-server U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/451/console |
| Powered by | Apache Yetus 0.9.0 http://yetus.apache.org |


This message was automatically generated.



> Expose store reader reference count
> -----------------------------------
>
>                 Key: HBASE-22459
>                 URL: https://issues.apache.org/jira/browse/HBASE-22459
>             Project: HBase
>          Issue Type: Improvement
>          Components: HFile, metrics, regionserver
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>             Fix For: 3.0.0, 1.5.0, 2.3.0
>
>         Attachments: HBASE-22459-branch-1.patch, HBASE-22459-branch-1.patch, 
> HBASE-22459-branch-1.patch, HBASE-22459-branch-2.patch, 
> HBASE-22459-branch-2.patch, HBASE-22459-branch-2.patch, HBASE-22459.patch, 
> HBASE-22459.patch, HBASE-22459.patch
>
>
> Expose the reference count over a region's store file readers as a metric in 
> region metrics and also as a new field in RegionLoad. This will make visible 
> the reader reference count over all stores in the region to both metrics 
> capture and anything that consumes ClusterStatus, like the shell's status 
> command and the master UI.
> Coprocessors that wrap scanners might leak them, which will leak readers. We 
> log when this happens but in order to notice the increasing trend of 
> reference counts you have to scrape log output. It would be better if this 
> information is also available as a metric.



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