[jira] Commented: (HADOOP-1902) du command throws an exception when the directory is not specified

["Enis Soztutar (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-1902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12527974 ] 

Enis Soztutar commented on HADOOP-1902:
---------------------------------------

This is indeed the desired behavior. Because we do not want to invoke the Path constructor with empty string. see HADOOP-1386. If you do not have any specific reasons to use du command w/o path argument, then we can close this issue as invalid. 

> du command throws an exception when the directory is not specified
> ------------------------------------------------------------------
>
>                 Key: HADOOP-1902
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1902
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.13.1
>            Reporter: Mukund Madhugiri
>
> Running the du command without specifying a directory throws an exception. It runs fine if a directory is specified. Here is the output
> mukundm@ucdev28 hadoop]$ bin/hadoop dfs -du
> Exception in thread "main" java.lang.IllegalArgumentException: Can not create a Path from an empty string
>         at org.apache.hadoop.fs.Path.checkPathArg(Path.java:82)
>         at org.apache.hadoop.fs.Path.<init>(Path.java:90)
>         at org.apache.hadoop.fs.FsShell.du(FsShell.java:351)
>         at org.apache.hadoop.fs.FsShell.run(FsShell.java:1040)
>         at org.apache.hadoop.util.ToolBase.doMain(ToolBase.java:189)
>         at org.apache.hadoop.fs.FsShell.main(FsShell.java:1092)
> [mukundm@ucdev28 hadoop]$ bin/hadoop dfs -du .
> Found 2 items
> /user/mukundm/input     28578
> /user/mukundm/output    747

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