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https://issues.apache.org/jira/browse/HDFS-15931?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HDFS-15931 started by Viraj Jasani.
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> Fix non-static inner classes for better memory management
> ---------------------------------------------------------
>
> Key: HDFS-15931
> URL: https://issues.apache.org/jira/browse/HDFS-15931
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Viraj Jasani
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> If an inner class does not need to reference its enclosing instance, it can
> be static. This prevents a common cause of memory leaks and uses less memory
> per instance of the enclosing class.
> Came across DataNodeProperties as a non static inner class defined in
> MiniDFSCluster without holding any implicit reference to MiniDFSCluster.
> Taking this opportunity to find other non-static inner classes that are not
> holding implicit reference to their respective enclosing instances.
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