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https://issues.apache.org/jira/browse/HDFS-10958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Agarwal updated HDFS-10958:
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Attachment: HDFS-10958.01.patch
Attached a patch to factor out most of the DataNode file IO dependencies into a
FileIoProvider class for easier testing/instrumentation. IO be hooked by
implementing the new {{FileIoEvents}} interface. The default hooks do nothing.
A couple of classes have don't use FileIoProvider yet (DataStorage and
BlockPoolSliceStorage).
The patch aims to introduce no behavioral changes. Thanks to [~xyao] for
reviewing an early iteration of this large patch.
> Add instrumentation hooks around Datanode disk IO
> -------------------------------------------------
>
> Key: HDFS-10958
> URL: https://issues.apache.org/jira/browse/HDFS-10958
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Xiaoyu Yao
> Assignee: Arpit Agarwal
> Attachments: HDFS-10958.01.patch
>
>
> This ticket is opened to add instrumentation hooks around Datanode disk IO
> based on refactor work from HDFS-10930.
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