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https://issues.apache.org/jira/browse/HDFS-17901?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ZanderXu resolved HDFS-17901.
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Resolution: Fixed
> Fix DFSNetworkTopology#getEligibleChildren missing DatanodeInfo handling
> causing incorrect storageCount
> -------------------------------------------------------------------------------------------------------
>
> Key: HDFS-17901
> URL: https://issues.apache.org/jira/browse/HDFS-17901
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
> Affects Versions: 3.4.3
> Reporter: yue.wang
> Assignee: Yue Wang
> Priority: Major
> Labels: pull-request-available
>
> In DFSNetworkTopology#getEligibleChildren(), when iterating over
> excludedNodes, the method only handles DatanodeDescriptor and
> DFSTopologyNodeImpl types but misses the DatanodeInfo type. This causes
> storageCount to be incorrectly calculated (overestimated), leading to
> inconsistency with the parent method chooseRandomWithStorageType() and
> potentially incorrect weighted random node selection.
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