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https://issues.apache.org/jira/browse/HDFS-17648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiaoqiao He resolved HDFS-17648.
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Fix Version/s: 3.5.0
Hadoop Flags: Reviewed
Resolution: Fixed
> 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
> Fix For: 3.5.0
>
>
> 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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