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From "Xiaobing Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12910) Add new FileSystem API to support asynchronous method calls
Date Fri, 29 Apr 2016 06:26:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15263613#comment-15263613
] 

Xiaobing Zhou commented on HADOOP-12910:
----------------------------------------

[~Apache9] Guava AbstractFuture is actually used in HADOOP-12909.

> Add new FileSystem API to support asynchronous method calls
> -----------------------------------------------------------
>
>                 Key: HADOOP-12910
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12910
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: fs
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Xiaobing Zhou
>         Attachments: HADOOP-12910-HDFS-9924.000.patch, HADOOP-12910-HDFS-9924.001.patch,
HADOOP-12910-HDFS-9924.002.patch
>
>
> Add a new API, namely FutureFileSystem (or AsynchronousFileSystem, if it is a better
name).  All the APIs in FutureFileSystem are the same as FileSystem except that the return
type is wrapped by Future, e.g.
> {code}
>   //FileSystem
>   public boolean rename(Path src, Path dst) throws IOException;
>   //FutureFileSystem
>   public Future<Boolean> rename(Path src, Path dst) throws IOException;
> {code}
> Note that FutureFileSystem does not extend FileSystem.



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