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https://issues.apache.org/jira/browse/HDFS-15180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17055671#comment-17055671
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zhuqi commented on HDFS-15180:
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[~sodonnell] , [~hexiaoqiao]
Thanks for your patient reply.
[~sodonnell] have done some work, ref. HDFS-15150 introduce read write lock
and HDFS-15160 is in progress currently. I have used HDFS-15160 in our product
cluster to gray, and now the blocked thread in datanode has been reduced a
lot.--
[~hexiaoqiao] i am looking forward to the {{BlockPoolLockManager}} to split
{{dataLock}} more fine-grained, i can assign to [~Aiphag0] anytime if he wants
to take it.
> 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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