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https://issues.apache.org/jira/browse/HDFS-10682?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Agarwal updated HDFS-10682:
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Description:
This Jira proposes to replace the FsDatasetImpl object lock with a separate
lock object. Doing so will make it easier to measure lock statistics like lock
held time and warn about potential lock contention due to slow disk operations.
In the future we can also consider replacing the lock with a read-write lock.
was:
This Jira proposes to replace the FsDatasetImpl object lock with a separate
lock object. Doing so will allow us to measure lock statistics.
In the future we can also consider replacing the lock with a read-write lock.
> Replace FsDatasetImpl object lock with a separate lock object
> -------------------------------------------------------------
>
> Key: HDFS-10682
> URL: https://issues.apache.org/jira/browse/HDFS-10682
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Chen Liang
> Assignee: Chen Liang
> Attachments: HDFS-10682.001.patch, HDFS-10682.002.patch,
> HDFS-10682.003.patch, HDFS-10682.004.patch, HDFS-10682.005.patch,
> HDFS-10682.006.patch
>
>
> This Jira proposes to replace the FsDatasetImpl object lock with a separate
> lock object. Doing so will make it easier to measure lock statistics like
> lock held time and warn about potential lock contention due to slow disk
> operations.
> In the future we can also consider replacing the lock with a read-write lock.
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