[ 
https://issues.apache.org/jira/browse/HBASE-21301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16672180#comment-16672180
 ] 

Hadoop QA commented on HBASE-21301:
-----------------------------------

| (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 
18s{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 1 new or modified test 
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  8m 
51s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m 
31s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
25s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  5m 
 7s{color} | {color:green} branch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m 
39s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
49s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  6m 
 8s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m 
19s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} javac {color} | {color:red}  2m 19s{color} 
| {color:red} hbase-server generated 4 new + 184 unchanged - 4 fixed = 188 
total (was 188) {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  1m 
26s{color} | {color:red} hbase-server: The patch generated 70 new + 76 
unchanged - 0 fixed = 146 total (was 76) {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red}  0m  
0s{color} | {color:red} The patch has 57 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  
2s{color} | {color:red} The patch 130 line(s) with tabs. {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  5m 
12s{color} | {color:green} patch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:red}-1{color} | {color:red} hadoopcheck {color} | {color:red}  8m 
18s{color} | {color:red} The patch causes 18 errors with Hadoop v3.0.0. {color} 
|
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red}  3m 
18s{color} | {color:red} hbase-server generated 2 new + 0 unchanged - 0 fixed = 
2 total (was 0) {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
38s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}262m 14s{color} 
| {color:red} hbase-server in the patch failed. {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}312m 24s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:hbase-server |
|  |  Should 
org.apache.hadoop.hbase.regionserver.stats.AccessStats$KeyPartDescriptor be a 
_static_ inner class?  At AccessStats.java:inner class?  At 
AccessStats.java:[lines 109-119] |
|  |  Result of integer multiplication cast to long in 
org.apache.hadoop.hbase.regionserver.stats.AccessStatsRecorderTableImpl.readAccessStats(TableName,
 AccessStats$AccessStatsType, AccessStats$AccessStatsGranularity, long, int)  
At AccessStatsRecorderTableImpl.java:to long in 
org.apache.hadoop.hbase.regionserver.stats.AccessStatsRecorderTableImpl.readAccessStats(TableName,
 AccessStats$AccessStatsType, AccessStats$AccessStatsGranularity, long, int)  
At AccessStatsRecorderTableImpl.java:[line 121] |
| Failed junit tests | hadoop.hbase.regionserver.TestAccessStats |
|   | hadoop.hbase.client.TestFromClientSide |
|   | hadoop.hbase.master.TestMasterNoCluster |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:b002b0b |
| JIRA Issue | HBASE-21301 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12946562/HBASE-21301.v0.master.patch
 |
| Optional Tests |  dupname  asflicense  javac  javadoc  unit  findbugs  
shadedjars  hadoopcheck  hbaseanti  checkstyle  compile  |
| uname | Linux 64b49f98014b 4.4.0-138-generic #164-Ubuntu SMP Tue Oct 2 
17:16:02 UTC 2018 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 / 6bdaedd7ce |
| maven | version: Apache Maven 3.5.4 
(1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z) |
| Default Java | 1.8.0_181 |
| findbugs | v3.1.0-RC3 |
| javac | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14927/artifact/patchprocess/diff-compile-javac-hbase-server.txt
 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14927/artifact/patchprocess/diff-checkstyle-hbase-server.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14927/artifact/patchprocess/whitespace-eol.txt
 |
| whitespace | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14927/artifact/patchprocess/whitespace-tabs.txt
 |
| hadoopcheck | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14927/artifact/patchprocess/patch-javac-3.0.0.txt
 |
| findbugs | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14927/artifact/patchprocess/new-findbugs-hbase-server.html
 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14927/artifact/patchprocess/patch-unit-hbase-server.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14927/testReport/ |
| Max. process+thread count | 4773 (vs. ulimit of 10000) |
| modules | C: hbase-server U: hbase-server |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/14927/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> Heatmap for key access patterns
> -------------------------------
>
>                 Key: HBASE-21301
>                 URL: https://issues.apache.org/jira/browse/HBASE-21301
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Archana Katiyar
>            Assignee: Archana Katiyar
>            Priority: Major
>             Fix For: 3.0.0, 1.5.0, 2.2.0
>
>         Attachments: HBASE-21301.v0.master.patch
>
>
> Google recently released a beta feature for Cloud Bigtable which presents a 
> heat map of the keyspace. *Given how hotspotting comes up now and again here, 
> this is a good idea for giving HBase ops a tool to be proactive about it.* 
> >>>
> Additionally, we are announcing the beta version of Key Visualizer, a 
> visualization tool for Cloud Bigtable key access patterns. Key Visualizer 
> helps debug performance issues due to unbalanced access patterns across the 
> key space, or single rows that are too large or receiving too much read or 
> write activity. With Key Visualizer, you get a heat map visualization of 
> access patterns over time, along with the ability to zoom into specific key 
> or time ranges, or select a specific row to find the full row key ID that's 
> responsible for a hotspot. Key Visualizer is automatically enabled for Cloud 
> Bigtable clusters with sufficient data or activity, and does not affect Cloud 
> Bigtable cluster performance. 
> <<<
> From 
> [https://cloudplatform.googleblog.com/2018/07/on-gcp-your-database-your-way.html]
> (Copied this description from the write-up by [~apurtell], thanks Andrew.)



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