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From "John Zhuge (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11092) Stackoverflow if only root directory is used in Command Line
Date Thu, 03 Nov 2016 06:42:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15631826#comment-15631826
] 

John Zhuge commented on HDFS-11092:
-----------------------------------

These 2 functions keep calling each other in this case:
{code:title=FileSystem#get(Configuration conf)}
  public static FileSystem get(Configuration conf) throws IOException {
    return get(getDefaultUri(conf), conf);           <<<<==
  }
{code}
{code:title=FileSystem#get(URI uri, Configuration conf)}
  public static FileSystem get(URI uri, Configuration conf) throws IOException {
    String scheme = uri.getScheme();
    String authority = uri.getAuthority();

    if (scheme == null && authority == null) {     // use default FS
      return get(conf);                              <<<<==
    }
...
{code}

> Stackoverflow if only root directory is used in Command Line
> ------------------------------------------------------------
>
>                 Key: HDFS-11092
>                 URL: https://issues.apache.org/jira/browse/HDFS-11092
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 2.7.2
>            Reporter: Darius Murawski
>            Assignee: John Zhuge
>
> Command: hadoop fs -fs 172.16.12.79/ -mkdir -p /usr/hduser
> Results in a Stack Overflow
> {code}
> Exception in thread "main" java.lang.StackOverflowError
> 	at java.lang.String.indexOf(String.java:1503)
> 	at java.net.URI$Parser.scan(URI.java:2951)
> 	at java.net.URI$Parser.parseHierarchical(URI.java:3104)
> 	at java.net.URI$Parser.parse(URI.java:3063)
> 	at java.net.URI.<init>(URI.java:588)
> 	at java.net.URI.create(URI.java:850)
> 	at org.apache.hadoop.fs.FileSystem.getDefaultUri(FileSystem.java:180)
> 	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:172)
> 	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:357)
> 	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:172)
> 	at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:357)
>         (...)
> {code}
> The Problem is the Slash at the End of the IP Address. When I remove it, the command
is executed correctly.



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