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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8545) Filesystem Implementation for OpenStack Swift
Date Wed, 02 Jan 2013 15:34:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13542184#comment-13542184
] 

Steve Loughran commented on HADOOP-8545:
----------------------------------------

I'm looking at this. One thing I don't understand is the logic in {{SwiftNativeFileSystem.create()}},
after getting the file status:

{code}
    if (fileStatus != null && !fileStatus.isDir()) {
      if (overwrite) {
        delete(file, true);
      } else {
        throw new IOException("File already exists: " + file);
      }
    } else {
      Path parent = file.getParent();
      if (parent != null) {
        if (!mkdirs(parent)) {
          throw new IOException("Mkdirs failed to create " + parent.toString());
        }
      }
    }
{code}

I can see that the "don't overwrite an existing file unless {{overwrite==true}}" is there,
but what does it mean if the path exists and is a directory? That it's just a no-op? 

If so I'd like to change the logic to make it more explicit what is going on.
                
> Filesystem Implementation for OpenStack Swift
> ---------------------------------------------
>
>                 Key: HADOOP-8545
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8545
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: fs
>    Affects Versions: 2.0.3-alpha, 1.1.2
>            Reporter: Tim Miller
>            Priority: Minor
>         Attachments: HADOOP-8545-1.patch, HADOOP-8545-2.patch, HADOOP-8545-3.patch, HADOOP-8545-4.patch,
HADOOP-8545-javaclouds-2.patch, HADOOP-8545.patch, HADOOP-8545.patch
>
>
> Add a filesystem implementation for OpenStack Swift object store, similar to the one
which exists today for S3.

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