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https://issues.apache.org/jira/browse/HBASE-17969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15990666#comment-15990666
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Hadoop QA commented on HBASE-17969:
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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 23s
{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 2 new or modified test
files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 33s
{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 6m
8s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 45s
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 2m
52s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
48s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m
56s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 16s
{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 21s
{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
55s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 43s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 43s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 2m
52s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
47s {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}
54m 57s {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} findbugs {color} | {color:green} 5m
25s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 17s
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 182m 28s
{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 3m 43s
{color} | {color:green} hbase-rsgroup in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
46s {color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 275m 49s {color}
| {color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.hbase.master.balancer.TestDefaultLoadBalancer |
| | hadoop.hbase.master.balancer.TestStochasticLoadBalancer2 |
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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/12865732/HBASE-17969.patch |
| JIRA Issue | HBASE-17969 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile |
| uname | Linux dcae2fbeb2d6 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 / 1848353 |
| Default Java | 1.8.0_121 |
| findbugs | v3.0.0 |
| unit |
https://builds.apache.org/job/PreCommit-HBASE-Build/6638/artifact/patchprocess/patch-unit-hbase-server.txt
|
| unit test logs |
https://builds.apache.org/job/PreCommit-HBASE-Build/6638/artifact/patchprocess/patch-unit-hbase-server.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/6638/testReport/ |
| modules | C: hbase-server hbase-rsgroup U: . |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/6638/console |
| Powered by | Apache Yetus 0.3.0 http://yetus.apache.org |
This message was automatically generated.
> Balance by table using SimpleLoadBalancer could end up imbalance
> ----------------------------------------------------------------
>
> Key: HBASE-17969
> URL: https://issues.apache.org/jira/browse/HBASE-17969
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 1.1.10
> Reporter: Allan Yang
> Assignee: Allan Yang
> Attachments: HBASE-17969-branch-1.patch,
> HBASE-17969-branch-1.v2.patch, HBASE-17969.patch
>
>
> This really happens in our production env.
> Here is a example:
> Say we have three RS named r1, r2, r3. A table named table1 with 3 regions
> distributes on these rs like this:
> r1 1
> r2 1
> r3 1
> Each rs have one region, it means table1 is balanced. So balancer will not
> run.
> If the region on r3 splits, then it becomes:
> r1 1
> r2 1
> r3 2
> For table1, in average, each rs will have min=1, max=2 regions. So still it
> is balanced, balancer will not run.
> Then a region on r3 splits again, the distribution becomes:
> r1 1
> r2 1
> r3 3
> In average, each rs will have min=1, max=2 regions. So balancer will run.
> For r1 and r2, they have already have min=1 regions. Balancer won't do any
> operation on them.
> But for r3, it exceed max=3, so balancer will remove one region from r3 and
> choose one rs from r1, r2 to move to.
> But r1 and r2 have the same load, so balancer will always choose r1 since
> servername r1 < r2(alphabet order, sorted by ServerAndLoad's compareTo
> method). It is OK for table1 itself. But if every table in the cluster have
> similar situations like table1, then the load in the cluster will always be
> like r1 > r2 > r3.
> So, the solution here is when each rs reach min regions (min=total region /
> servers), but there still some region need to move, shuffle the regionservers
> before move.
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