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https://issues.apache.org/jira/browse/HBASE-15102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15101080#comment-15101080
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Hadoop QA commented on HBASE-15102:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green} 0m
1s {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:green}+1{color} | {color:green} mvninstall {color} | {color:green} 2m
22s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 38s
{color} | {color:green} master passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 32s
{color} | {color:green} master passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 4m
20s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
15s {color} | {color:green} master passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 1m 48s
{color} | {color:red} hbase-server in master has 83 extant Findbugs warnings.
{color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 26s
{color} | {color:green} master passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 32s
{color} | {color:green} master passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
42s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 46s
{color} | {color:green} the patch passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 46s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 33s
{color} | {color:green} the patch passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 33s
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 4m 0s
{color} | {color:red} Patch generated 11 new checkstyle issues in hbase-server
(total was 33, now 40). {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
15s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s {color} | {color:green} Patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}
24m 34s {color} | {color:green} Patch does not cause any errors with Hadoop
2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.1 2.6.2 2.6.3 2.7.1. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m
21s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 29s
{color} | {color:green} the patch passed with JDK v1.8.0 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 36s
{color} | {color:green} the patch passed with JDK v1.7.0_79 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 104m 26s
{color} | {color:green} hbase-server in the patch passed with JDK v1.8.0.
{color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 97m 47s
{color} | {color:green} hbase-server in the patch passed with JDK v1.7.0_79.
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
15s {color} | {color:green} Patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 247m 59s {color}
| {color:black} {color} |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12782363/HBASE-15102-V2.patch |
| JIRA Issue | HBASE-15102 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile |
| uname | Linux asf905.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP
PREEMPT Wed Sep 3 21:56:12 UTC 2014 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 / ae7cc0c |
| findbugs | v3.0.0 |
| findbugs |
https://builds.apache.org/job/PreCommit-HBASE-Build/126/artifact/patchprocess/branch-findbugs-hbase-server-warnings.html
|
| checkstyle |
https://builds.apache.org/job/PreCommit-HBASE-Build/126/artifact/patchprocess/diff-checkstyle-hbase-server.txt
|
| JDK v1.7.0_79 Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/126/testReport/ |
| modules | C: hbase-server U: hbase-server |
| Max memory used | 192MB |
| Powered by | Apache Yetus 0.1.0 http://yetus.apache.org |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/126/console |
This message was automatically generated.
> HeapMemoryTuner can "overtune" memstore size and suddenly drop it into
> blocking zone
> ------------------------------------------------------------------------------------
>
> Key: HBASE-15102
> URL: https://issues.apache.org/jira/browse/HBASE-15102
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 2.0.0, 1.2.0, 1.3.0
> Reporter: Ashu Pachauri
> Assignee: Ashu Pachauri
> Priority: Critical
> Fix For: 2.0.0, 1.2.0, 1.3.0
>
> Attachments: HBASE-15102-V0.patch, HBASE-15102-V1.patch,
> HBASE-15102-V2.patch
>
>
> DefaultHeapMemoryTuner often resets the maximum step size for tuning to 8% of
> total heap size. Often, when the size of memstore is to be decreased while
> tuning, the 8% tuning can suddenly drop the memstore size below the low water
> mark of the previous memstore size (which could potentially be the used size
> of the memstore)
> This is problematic because suddenly it blocks all the updates by suddenly
> causing a situation where memstore used size is above high water mark. This
> has a very bad performance impact on an otherwise fine HBase cluster.
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