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https://issues.apache.org/jira/browse/HDFS-8918?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhe Zhang resolved HDFS-8918.
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Resolution: Duplicate
> Convert BlockUnderConstructionFeature#replicas form list to array
> -----------------------------------------------------------------
>
> Key: HDFS-8918
> URL: https://issues.apache.org/jira/browse/HDFS-8918
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.8.0
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
>
> {{BlockInfoUnderConstruction}} / {{BlockUnderConstructionFeature}} uses a
> List to store its {{replicas}}. To reduce memory usage, we can use an array
> instead.
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