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https://issues.apache.org/jira/browse/HBASE-28913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18061747#comment-18061747
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Hudson commented on HBASE-28913:
--------------------------------
Results for branch branch-2.5
[build #785 on
builds.a.o|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785/]:
(x) *{color:red}-1 overall{color}*
----
details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785/General_20Nightly_20Build_20Report/]
(x) {color:red}-1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785/JDK8_20Nightly_20Build_20Report_20_28Hadoop2_29/]
(x) {color:red}-1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3)
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785/JDK8_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(x) {color:red}-1 jdk11 hadoop3 checks{color}
-- For more information [see jdk11
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785/JDK11_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk17 hadoop3 checks{color}
-- For more information [see jdk17
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785/JDK17_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk17 hadoop 3.2.4 backward compatibility checks{color}
-- For more information [see jdk17
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785/JDK17_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk17 hadoop 3.3.5 backward compatibility checks{color}
-- For more information [see jdk17
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785/JDK17_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk17 hadoop 3.3.6 backward compatibility checks{color}
-- For more information [see jdk17
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785/JDK17_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk17 hadoop 3.4.1 backward compatibility checks{color}
-- For more information [see jdk17
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785/JDK17_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(x) {color:red}-1 source release artifact{color}
-- Something went wrong with this stage, [check relevant console
output|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785//console].
(x) {color:red}-1 client integration test{color}
-- Something went wrong with this stage, [check relevant console
output|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-2.5/785//console].
> LoadBalancerPerformanceEvaluation fails with NPE
> ------------------------------------------------
>
> Key: HBASE-28913
> URL: https://issues.apache.org/jira/browse/HBASE-28913
> Project: HBase
> Issue Type: Bug
> Components: tooling
> Reporter: Nihal Jain
> Assignee: Xiao Liu
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.7.0, 3.0.0-beta-2, 2.6.5, 2.5.14
>
>
> While testing [https://github.com/apache/hbase/pull/6258] found that
> LoadBalancerPerformanceEvaluation fails with NPE, not related to PR as fails
> for master as well. This Jira is to track and fix this issue.
> {code:java}
> bin % ./hbase
> org.apache.hadoop.hbase.master.balancer.LoadBalancerPerformanceEvaluation
> -regions 30000 -servers 10
> 2024-10-14T01:48:06,772 INFO [main {}] metrics.MetricRegistries: Loaded
> MetricRegistries class
> org.apache.hadoop.hbase.metrics.impl.MetricRegistriesImpl
> 2024-10-14T01:48:06,841 INFO [main {}]
> balancer.LoadBalancerPerformanceEvaluation: Calling roundRobinAssignment
> 2024-10-14T01:48:06,850 INFO [main {}] balancer.BalancerClusterState: server
> 0 is on rack 0
> 2024-10-14T01:48:06,850 INFO [main {}] balancer.BalancerClusterState: server
> 1 is on rack 0
> 2024-10-14T01:48:06,850 INFO [main {}] balancer.BalancerClusterState: server
> 2 is on rack 0
> 2024-10-14T01:48:06,850 INFO [main {}] balancer.BalancerClusterState: server
> 3 is on rack 0
> 2024-10-14T01:48:06,850 INFO [main {}] balancer.BalancerClusterState: server
> 4 is on rack 0
> 2024-10-14T01:48:06,850 INFO [main {}] balancer.BalancerClusterState: server
> 5 is on rack 0
> 2024-10-14T01:48:06,850 INFO [main {}] balancer.BalancerClusterState: server
> 6 is on rack 0
> 2024-10-14T01:48:06,850 INFO [main {}] balancer.BalancerClusterState: server
> 7 is on rack 0
> 2024-10-14T01:48:06,850 INFO [main {}] balancer.BalancerClusterState: server
> 8 is on rack 0
> 2024-10-14T01:48:06,850 INFO [main {}] balancer.BalancerClusterState: server
> 9 is on rack 0
> Time for roundRobinAssignment : 238ms
> 2024-10-14T01:48:07,079 INFO [main {}]
> balancer.LoadBalancerPerformanceEvaluation: Calling retainAssignment
> 2024-10-14T01:48:07,091 INFO [main {}] balancer.BalancerClusterState: server
> 0 is on rack 0
> 2024-10-14T01:48:07,091 INFO [main {}] balancer.BalancerClusterState: server
> 1 is on rack 0
> 2024-10-14T01:48:07,091 INFO [main {}] balancer.BalancerClusterState: server
> 2 is on rack 0
> 2024-10-14T01:48:07,091 INFO [main {}] balancer.BalancerClusterState: server
> 3 is on rack 0
> 2024-10-14T01:48:07,091 INFO [main {}] balancer.BalancerClusterState: server
> 4 is on rack 0
> 2024-10-14T01:48:07,091 INFO [main {}] balancer.BalancerClusterState: server
> 5 is on rack 0
> 2024-10-14T01:48:07,092 INFO [main {}] balancer.BalancerClusterState: server
> 6 is on rack 0
> 2024-10-14T01:48:07,092 INFO [main {}] balancer.BalancerClusterState: server
> 7 is on rack 0
> 2024-10-14T01:48:07,092 INFO [main {}] balancer.BalancerClusterState: server
> 8 is on rack 0
> 2024-10-14T01:48:07,092 INFO [main {}] balancer.BalancerClusterState: server
> 9 is on rack 0
> 2024-10-14T01:48:07,284 INFO [main {}] balancer.BaseLoadBalancer: Reassigned
> 30000 regions. 0 retained the pre-restart assignment. 30000 regions were
> assigned to random hosts, since the old hosts for these regions are no longer
> present in the cluster. These hosts were:
>
> Time for retainAssignment : 204ms
> 2024-10-14T01:48:07,284 INFO [main {}]
> balancer.LoadBalancerPerformanceEvaluation: Calling balanceCluster
> 2024-10-14T01:48:07,315 INFO [main {}] balancer.BalancerClusterState: server
> 0 is on rack 0
> 2024-10-14T01:48:07,315 INFO [main {}] balancer.BalancerClusterState: server
> 1 is on rack 0
> 2024-10-14T01:48:07,315 INFO [main {}] balancer.BalancerClusterState: server
> 2 is on rack 0
> 2024-10-14T01:48:07,323 INFO [main {}] balancer.BalancerClusterState: server
> 3 is on rack 0
> 2024-10-14T01:48:07,323 INFO [main {}] balancer.BalancerClusterState: server
> 4 is on rack 0
> 2024-10-14T01:48:07,323 INFO [main {}] balancer.BalancerClusterState: server
> 5 is on rack 0
> 2024-10-14T01:48:07,323 INFO [main {}] balancer.BalancerClusterState: server
> 6 is on rack 0
> 2024-10-14T01:48:07,323 INFO [main {}] balancer.BalancerClusterState: server
> 7 is on rack 0
> 2024-10-14T01:48:07,323 INFO [main {}] balancer.BalancerClusterState: server
> 8 is on rack 0
> 2024-10-14T01:48:07,323 INFO [main {}] balancer.BalancerClusterState: server
> 9 is on rack 0
> 2024-10-14T01:48:07,325 ERROR [main {}] util.AbstractHBaseTool: Error running
> command-line tool
> java.lang.NullPointerException: Cannot invoke "java.util.List.size()" because
> "this.candidateGenerators" is null
> at
> org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.initCosts(StochasticLoadBalancer.java:750)
> ~[hbase-balancer-4.0.0-alpha-1-SNAPSHOT.jar:4.0.0-alpha-1-SNAPSHOT]
> at
> org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer.balanceTable(StochasticLoadBalancer.java:475)
> ~[hbase-balancer-4.0.0-alpha-1-SNAPSHOT.jar:4.0.0-alpha-1-SNAPSHOT]
> at
> org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.balanceCluster(BaseLoadBalancer.java:620)
> ~[hbase-balancer-4.0.0-alpha-1-SNAPSHOT.jar:4.0.0-alpha-1-SNAPSHOT]
> at
> org.apache.hadoop.hbase.master.balancer.LoadBalancerPerformanceEvaluation.doWork(LoadBalancerPerformanceEvaluation.java:172)
> ~[hbase-balancer-4.0.0-alpha-1-SNAPSHOT-tests.jar:4.0.0-alpha-1-SNAPSHOT]
> at
> org.apache.hadoop.hbase.util.AbstractHBaseTool.run(AbstractHBaseTool.java:150)
> ~[hbase-common-4.0.0-alpha-1-SNAPSHOT.jar:4.0.0-alpha-1-SNAPSHOT]
> at
> org.apache.hadoop.hbase.master.balancer.LoadBalancerPerformanceEvaluation.main(LoadBalancerPerformanceEvaluation.java:181)
>
> ~[hbase-balancer-4.0.0-alpha-1-SNAPSHOT-tests.jar:4.0.0-alpha-1-SNAPSHOT]{code}
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