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https://issues.apache.org/jira/browse/HDFS-10930?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiaoyu Yao updated HDFS-10930:
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Attachment: HDFS-10930.01.patch
Attach a initial patch that refactors IO related operations into
DatanodeIO.java class. I will open follow up JIRAs on instrumentation, per
volume IO related metrics collection, etc based on that.
> Refactor Datanode IO operations into a single class
> ---------------------------------------------------
>
> Key: HDFS-10930
> URL: https://issues.apache.org/jira/browse/HDFS-10930
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Xiaoyu Yao
> Assignee: Xiaoyu Yao
> Attachments: HDFS-10930.01.patch
>
>
> Datanode IO (Disk/Network) related operations and instrumentations are
> currently spilled in many classes such as DataNode.java, BlockReceiver.java,
> BlockSender.java, FsDatasetImpl.java, FsVolumeImpl.java,
> DirectoryScanner.java, BlockScanner.java, FsDatasetAsyncDiskService.java,
> LocalReplica.java, LocalReplicaPipeline.java, Storage.java, etc.
> This ticket is opened to consolidate IO related operations for easy
> instrumentation, metrics collection, logging and trouble shooting.
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