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https://issues.apache.org/jira/browse/HDFS-17339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17807010#comment-17807010
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ASF GitHub Bot commented on HDFS-17339:
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ThinkerLei closed pull request #6454: HDFS-17339:HDFS-17339: Skip cacheReport
when one blockPool does not have CacheBlock on this DataNode
URL: https://github.com/apache/hadoop/pull/6454
> 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
> Priority: Major
> Labels: pull-request-available
>
> 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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