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https://issues.apache.org/jira/browse/HADOOP-13032?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15583444#comment-15583444
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Mingliang Liu commented on HADOOP-13032:
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[[email protected]], yes it changes the public API, largely
{{FileSystem$Statistics}} -> {{StorageStatistics}}
The major concern indeed is to update the client-side code accordingly. For MR
I changed their usage in this large patch (can be split into sub-task JIRAS);
but for other projects we have to provide separate patches. We can use stat
type enums as well as iterators in {{StorageStatistics}} so the new client code
will be simpler and consistent (hopefully).
Thanks,
> Refactor FileSystem$Statistics to use StorageStatistics
> -------------------------------------------------------
>
> Key: HADOOP-13032
> URL: https://issues.apache.org/jira/browse/HADOOP-13032
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs
> Reporter: Mingliang Liu
> Assignee: Mingliang Liu
> Attachments: HADOOP-13032.000.patch, HADOOP-13032.001.patch,
> HADOOP-13032.002.patch, HADOOP-13032.003.patch
>
>
> [HADOOP-13065] added a new interface for retrieving FS and FC Statistics.
> This jira is to track the effort of moving the {{Statistics}} class out of
> {{FileSystem}}, and make it use that new interface.
> We should keep the thread local implementation. Benefits are:
> # they could be used in both {{FileContext}} and {{FileSystem}}
> # unified stats data structure
> # shorter source code
> Please note this will be an backwards-incompatible change.
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