[ https://issues.apache.org/jira/browse/HBASE-17707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16031919#comment-16031919 ]
Hadoop QA commented on HBASE-17707: ----------------------------------- | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 34s {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:green}+1{color} | {color:green} mvninstall {color} | {color:green} 6m 36s {color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 24s {color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 28s {color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 28s {color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m 8s {color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 55s {color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 34s {color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 24s {color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 24s {color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 29s {color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 25s {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} 57m 37s {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} 4m 22s {color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 54s {color} | {color:green} the patch passed {color} | | {color:red}-1{color} | {color:red} unit {color} | {color:red} 216m 8s {color} | {color:red} hbase-server in the patch failed. {color} | | {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 43s {color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black} 300m 48s {color} | {color:black} {color} | \\ \\ || Reason || Tests || | Failed junit tests | hadoop.hbase.master.balancer.TestStochasticLoadBalancer2 | | Timed out junit tests | org.apache.hadoop.hbase.master.balancer.TestStochasticLoadBalancer | | | org.apache.hadoop.hbase.filter.TestFuzzyRowFilterEndToEnd | \\ \\ || Subsystem || Report/Notes || | Docker | Client=17.03.0-ce Server=17.03.0-ce Image:yetus/hbase:757bf37 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12870588/HBASE-17707-14.patch | | JIRA Issue | HBASE-17707 | | Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck hbaseanti checkstyle compile | | uname | Linux 1e9b0c75cd32 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 / dda9ae0 | | Default Java | 1.8.0_131 | | findbugs | v3.0.0 | | unit | https://builds.apache.org/job/PreCommit-HBASE-Build/7024/artifact/patchprocess/patch-unit-hbase-server.txt | | unit test logs | https://builds.apache.org/job/PreCommit-HBASE-Build/7024/artifact/patchprocess/patch-unit-hbase-server.txt | | Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/7024/testReport/ | | modules | C: hbase-server U: hbase-server | | Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/7024/console | | Powered by | Apache Yetus 0.3.0 http://yetus.apache.org | This message was automatically generated. > New More Accurate Table Skew cost function/generator > ---------------------------------------------------- > > Key: HBASE-17707 > URL: https://issues.apache.org/jira/browse/HBASE-17707 > Project: HBase > Issue Type: New Feature > Components: Balancer > Affects Versions: 1.2.0 > Environment: CentOS Derivative with a derivative of the 3.18.43 > kernel. HBase on CDH5.9.0 with some patches. HDFS CDH 5.9.0 with no patches. > Reporter: Kahlil Oppenheimer > Assignee: Kahlil Oppenheimer > Priority: Minor > Fix For: 2.0.0 > > Attachments: HBASE-17707-00.patch, HBASE-17707-01.patch, > HBASE-17707-02.patch, HBASE-17707-03.patch, HBASE-17707-04.patch, > HBASE-17707-05.patch, HBASE-17707-06.patch, HBASE-17707-07.patch, > HBASE-17707-08.patch, HBASE-17707-09.patch, HBASE-17707-11.patch, > HBASE-17707-11.patch, HBASE-17707-12.patch, HBASE-17707-13.patch, > HBASE-17707-14.patch, test-balancer2-13617.out > > > This patch includes new version of the TableSkewCostFunction and a new > TableSkewCandidateGenerator. > The new TableSkewCostFunction computes table skew by counting the minimal > number of region moves required for a given table to perfectly balance the > table across the cluster (i.e. as if the regions from that table had been > round-robin-ed across the cluster). This number of moves is computer for each > table, then normalized to a score between 0-1 by dividing by the number of > moves required in the absolute worst case (i.e. the entire table is stored on > one server), and stored in an array. The cost function then takes a weighted > average of the average and maximum value across all tables. The weights in > this average are configurable to allow for certain users to more strongly > penalize situations where one table is skewed versus where every table is a > little bit skewed. To better spread this value more evenly across the range > 0-1, we take the square root of the weighted average to get the final value. > The new TableSkewCandidateGenerator generates region moves/swaps to optimize > the above TableSkewCostFunction. It first simply tries to move regions until > each server has the right number of regions, then it swaps regions around > such that each region swap improves table skew across the cluster. > We tested the cost function and generator in our production clusters with > 100s of TBs of data and 100s of tables across dozens of servers and found > both to be very performant and accurate. -- This message was sent by Atlassian JIRA (v6.3.15#6346)