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https://issues.apache.org/jira/browse/HBASE-17178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15707454#comment-15707454
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Hadoop QA commented on HBASE-17178:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 12m 48s
{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 25s
{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 2m
39s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 45s
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
34s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
22s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 0s
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 38s
{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 10s
{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
51s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 45s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 45s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
35s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
22s {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} xml {color} | {color:green} 0m 1s
{color} | {color:green} The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}
23m 14s {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-alpha1. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m
15s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 37s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 47s
{color} | {color:green} hbase-common in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 87m 16s
{color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
29s {color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 139m 6s {color}
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|| Subsystem || Report/Notes ||
| Docker | Client=1.12.3 Server=1.12.3 Image:yetus/hbase:8d52d23 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12840972/HBASE-17178-v4.patch |
| JIRA Issue | HBASE-17178 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile xml |
| uname | Linux 6d5f4d5ed08f 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12
13:48:03 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 / 7c43a23 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/4699/testReport/ |
| modules | C: hbase-common hbase-server U: . |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/4699/console |
| Powered by | Apache Yetus 0.3.0 http://yetus.apache.org |
This message was automatically generated.
> Add region balance throttling
> -----------------------------
>
> Key: HBASE-17178
> URL: https://issues.apache.org/jira/browse/HBASE-17178
> Project: HBase
> Issue Type: Improvement
> Components: Balancer
> Reporter: Guanghao Zhang
> Assignee: Guanghao Zhang
> Attachments: HBASE-17178-v1.patch, HBASE-17178-v2.patch,
> HBASE-17178-v3.patch, HBASE-17178-v4.patch
>
>
> Our online cluster serves dozens of tables and different tables serve for
> different services. If the balancer moves too many regions in the same time,
> it will decrease the availability for some table or some services. So we add
> region balance throttling on our online serve cluster.
> We introduce a new config hbase.balancer.max.balancing.regions, which means
> the max number of regions in transition when balancing.
> If we config this to 1 and a table have 100 regions, then the table will have
> 99 regions available at any time. It helps a lot for our use case and it has
> been running a long time
> our production cluster.
> But for some use case, we need the balancer run faster. If a cluster has 100
> regionservers, then it add 50 new regionservers for peak requests. Then it
> need balancer run as soon as
> possible and let the cluster reach a balance state soon. Our idea is compute
> max number of regions in transition by the max balancing time and the average
> time of region in transition.
> Then the balancer use the computed value to throttling.
> Examples for understanding.
> A cluster has 100 regionservers, each regionserver has 200 regions and the
> average time of region in transition is 1 seconds, we config the max
> balancing time is 10 * 60 seconds.
> Case 1. One regionserver crash, the cluster at most need balance 200 regions.
> Then 200 / (10 * 60s / 1s) < 1, it means the max number of regions in
> transition is 1 when balancing. Then the balancer can move region one by one
> and the cluster will have high availability when balancing.
> Case 2. Add other 100 regionservers, the cluster at most need balance 10000
> regions. Then 10000 / (10 * 60s / 1s) = 16.7, it means the max number of
> regions in transition is 17 when balancing. Then the cluster can reach a
> balance state within the max balancing time.
> Any suggestions are welcomed.
> Review board: https://reviews.apache.org/r/54191/
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