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https://issues.apache.org/jira/browse/HDFS-15520?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shashikant Banerjee resolved HDFS-15520.
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Fix Version/s: 3.4.0
Resolution: Fixed
> Use visitor pattern to visit namespace tree
> -------------------------------------------
>
> Key: HDFS-15520
> URL: https://issues.apache.org/jira/browse/HDFS-15520
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Tsz-wo Sze
> Assignee: Tsz-wo Sze
> Priority: Major
> Fix For: 3.4.0
>
>
> In order to allow the FsImageValidation tool to verify the namespace
> structure, we use a visitor pattern so that the tool can visit all the INodes
> and all the snapshots in the namespace tree.
> The existing INode.dumpTreeRecursively() can also be implemented by a visitor.
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