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https://issues.apache.org/jira/browse/HDFS-17648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17903864#comment-17903864
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ASF GitHub Bot commented on HDFS-17648:
---------------------------------------
Hexiaoqiao merged PR #7133:
URL: https://github.com/apache/hadoop/pull/7133
> Fix BalancerMetrics duplicate registration issue.
> -------------------------------------------------
>
> Key: HDFS-17648
> URL: https://issues.apache.org/jira/browse/HDFS-17648
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Zhaobo Huang
> Assignee: Zhaobo Huang
> Priority: Major
> Labels: pull-request-available
>
> When executing 'b.runOneIteration()' in a loop, repeat the registration of
> metrics in the balancer constructor as follows:
> {code:java}
> Balancer(NameNodeConnector theblockpool, BalancerParameters p,
> Configuration conf) {
> ...
> this.metrics = BalancerMetrics.create(this);
> } {code}
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