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From "Takenori Sato (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-11742) mkdir by file system shell fails on an empty bucket
Date Wed, 25 Mar 2015 06:34:54 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-11742?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Takenori Sato updated HADOOP-11742:
-----------------------------------
    Attachment: HADOOP-11742-branch-2.7.001.patch

An empty key means a root directory instead of "Not Found". This is the same behavior as _NativeS3FileSystem#getFileStatus_.

{code}
# hadoop-2.7.0-SNAPSHOT/bin/hdfs dfs -ls s3a://s3a/
15/03/25 06:28:05 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/ ()
15/03/25 06:28:05 DEBUG s3a.S3AFileSystem: List status for path: s3a://s3a/
15/03/25 06:28:05 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/ ()
15/03/25 06:28:05 DEBUG s3a.S3AFileSystem: listStatus: doing listObjects for directory 
# hadoop-2.7.0-SNAPSHOT/bin/hdfs dfs -mkdir s3a://s3a/foo
15/03/25 06:28:22 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/foo (foo)
15/03/25 06:28:23 DEBUG s3a.S3AFileSystem: Not Found: s3a://s3a/foo
15/03/25 06:28:23 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/ ()
15/03/25 06:28:23 DEBUG s3a.S3AFileSystem: Making directory: s3a://s3a/foo
15/03/25 06:28:23 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/foo (foo)
15/03/25 06:28:23 DEBUG s3a.S3AFileSystem: Not Found: s3a://s3a/foo
15/03/25 06:28:23 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/foo (foo)
15/03/25 06:28:24 DEBUG s3a.S3AFileSystem: Not Found: s3a://s3a/foo
15/03/25 06:28:24 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/ ()
# hadoop-2.7.0-SNAPSHOT/bin/hdfs dfs -ls s3a://s3a/
15/03/25 06:28:31 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/ ()
15/03/25 06:28:31 DEBUG s3a.S3AFileSystem: List status for path: s3a://s3a/
15/03/25 06:28:31 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/ ()
15/03/25 06:28:31 DEBUG s3a.S3AFileSystem: listStatus: doing listObjects for directory 
15/03/25 06:28:31 DEBUG s3a.S3AFileSystem: Adding: rd: s3a://s3a/foo
Found 1 items
drwxrwxrwx   -          0 1970-01-01 00:00 s3a://s3a/foo
{code}


> mkdir by file system shell fails on an empty bucket
> ---------------------------------------------------
>
>                 Key: HADOOP-11742
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11742
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs/s3
>         Environment: CentOS 7
>            Reporter: Takenori Sato
>         Attachments: HADOOP-11742-branch-2.7.001.patch
>
>
> I have built the latest 2.7, and tried S3AFileSystem.
> Then found that _mkdir_ fails on an empty bucket, named *s3a* here, as follows:
> {code}
> # hadoop-2.7.0-SNAPSHOT/bin/hdfs dfs -mkdir s3a://s3a/foo
> 15/03/24 03:49:35 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/foo (foo)
> 15/03/24 03:49:36 DEBUG s3a.S3AFileSystem: Not Found: s3a://s3a/foo
> 15/03/24 03:49:36 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/ ()
> 15/03/24 03:49:36 DEBUG s3a.S3AFileSystem: Not Found: s3a://s3a/
> mkdir: `s3a://s3a/foo': No such file or directory
> {code}
> So does _ls_.
> {code}
> # hadoop-2.7.0-SNAPSHOT/bin/hdfs dfs -ls s3a://s3a/
> 15/03/24 03:47:48 DEBUG s3a.S3AFileSystem: Getting path status for s3a://s3a/ ()
> 15/03/24 03:47:48 DEBUG s3a.S3AFileSystem: Not Found: s3a://s3a/
> ls: `s3a://s3a/': No such file or directory
> {code}
> This is how it works via s3n.
> {code}
> # hadoop-2.7.0-SNAPSHOT/bin/hdfs dfs -ls s3n://s3n/
> # hadoop-2.7.0-SNAPSHOT/bin/hdfs dfs -mkdir s3n://s3n/foo
> # hadoop-2.7.0-SNAPSHOT/bin/hdfs dfs -ls s3n://s3n/
> Found 1 items
> drwxrwxrwx   -          0 1970-01-01 00:00 s3n://s3n/foo
> {code}
> The snapshot is the following:
> {quote}
> \# git branch
> \* branch-2.7
>   trunk
> \# git log
> commit 929b04ce3a4fe419dece49ed68d4f6228be214c1
> Author: Harsh J <harsh@cloudera.com>
> Date:   Sun Mar 22 10:18:32 2015 +0530
> {quote}



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