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From "Yuanbo Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13765) Return HomeDirectory if possible in SFTPFileSystem
Date Fri, 28 Oct 2016 02:42:58 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15614071#comment-15614071
] 

Yuanbo Liu commented on HADOOP-13765:
-------------------------------------

LGTM, [~byh0831] Thanks for filing this jira.
[~stevel@apache.org] I also checked the behavior of {{FTPFileSystem}}, it throws a runtime
exception if there is a running error.
I'm not sure which behavior is more reasonable, looking forward to your thoughts.

> Return HomeDirectory if possible in SFTPFileSystem
> --------------------------------------------------
>
>                 Key: HADOOP-13765
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13765
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>            Reporter: Yuhao Bi
>         Attachments: HADOOP-13765.001.patch
>
>
> In SFTPFileSystem#getHomeDirectory(), we disconnect the ChannelSftp in finally block.
> If we get the homeDir Path successfully but got an IOE in the finally block we will return
the null result.
> Maybe we can simply ignore this IOE and just return the result we have got.
> Related codes are shown below.
> {code:title=SFTPFileSystem.java|borderStyle=solid}
>   public Path getHomeDirectory() {
>     ChannelSftp channel = null;
>     try {
>       channel = connect();
>       Path homeDir = new Path(channel.pwd());
>       return homeDir;
>     } catch (Exception ioe) {
>       return null;
>     } finally {
>       try {
>         disconnect(channel);
>       } catch (IOException ioe) {
>         //Maybe we can just ignore this IOE and do not return null here.
>         return null;
>       }
>     }
>   }
> {code}



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