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https://issues.apache.org/jira/browse/HDFS-10924?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jingcheng Du updated HDFS-10924:
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Component/s: datanode
> Add a new instrumented read-write lock
> --------------------------------------
>
> Key: HDFS-10924
> URL: https://issues.apache.org/jira/browse/HDFS-10924
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Jingcheng Du
>
> Add a new instrumented read-write lock in hadoop common, so that the
> HDFS-9668 can use this to improve the locking in FsDatasetImpl
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