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https://issues.apache.org/jira/browse/HDFS-15180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17055694#comment-17055694
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Stephen O'Donnell commented on HDFS-15180:
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Hi [~zhuqi] - I just wanted to confirm from your last message - Are you
actually running HDFS-15160 on a busy cluster and seeing a big improvement from
it? Have you seen any issues or has it worked OK? If so, that is great feedback
and thanks for trying it and sharing the results.
> DataNode FsDatasetImpl Fine-Grained Locking via BlockPool.
> -----------------------------------------------------------
>
> Key: HDFS-15180
> URL: https://issues.apache.org/jira/browse/HDFS-15180
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Affects Versions: 3.2.0
> Reporter: zhuqi
> Assignee: zhuqi
> Priority: Major
>
> Now the FsDatasetImpl datasetLock is heavy, when their are many namespaces in
> big cluster. If we can split the FsDatasetImpl datasetLock via blockpool.
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