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https://issues.apache.org/jira/browse/HDFS-17339?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shuyan Zhang resolved HDFS-17339.
---------------------------------
       Fix Version/s: 3.5.0
        Hadoop Flags: Reviewed
    Target Version/s: 3.5.0
          Resolution: Fixed

> BPServiceActor should skip cacheReport when one blockPool does not have 
> CacheBlock on this DataNode
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-17339
>                 URL: https://issues.apache.org/jira/browse/HDFS-17339
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: lei w
>            Assignee: lei w
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.5.0
>
>
> Now, DataNode will cacheReport to all NameNode when CacheCapacitySize is not 
> zero. But sometimes, not all NameNodes have CacheBlock on this DataNode. So 
> BPServiceActor should skip cacheReport when one blockPool does not have 
> CacheBlock on this DataNode. If so, the NameNode will reduce unnecessary lock 
> contention



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