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https://issues.apache.org/jira/browse/HADOOP-13321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mingliang Liu updated HADOOP-13321:
-----------------------------------
Attachment: HADOOP-13321.002.patch
Thanks [~ste...@apache.org] for your review. I found some of the javadoc
problems have been fixed by your previous patch. As we don't really honor the
order of javadoc annotations, the v2 patch does not change the existing
@deprecated annotation.
> Deprecate FileSystem APIs that promote inefficient call patterns.
> -----------------------------------------------------------------
>
> Key: HADOOP-13321
> URL: https://issues.apache.org/jira/browse/HADOOP-13321
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 3.0.0-alpha3
> Reporter: Chris Nauroth
> Assignee: Mingliang Liu
> Attachments: HADOOP-13321.000.patch, HADOOP-13321.001.patch,
> HADOOP-13321.002.patch
>
>
> {{FileSystem}} contains several methods that act as convenience wrappers over
> calling {{getFileStatus}} and retrieving a single property of the returned
> {{FileStatus}}. These methods have a habit of fostering inefficient call
> patterns in applications, resulting in multiple redundant {{getFileStatus}}
> calls. For HDFS, this translates into wasteful NameNode RPC traffic. For
> file systems backed by cloud object stores, this translates into wasteful
> HTTP traffic. This issue proposes to deprecate these methods and instead
> encourage applications to call {{getFileStatus}} and then reuse the same
> {{FileStatus}} instance as needed.
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