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Posted to common-dev@hadoop.apache.org by "dhruba borthakur (JIRA)" <ji...@apache.org> on 2007/07/25 21:36:35 UTC
[jira] Assigned: (HADOOP-1647)
DistributedFileSystem.getFileStatus() fails for path "/"
[ https://issues.apache.org/jira/browse/HADOOP-1647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
dhruba borthakur reassigned HADOOP-1647:
----------------------------------------
Assignee: dhruba borthakur
> DistributedFileSystem.getFileStatus() fails for path "/"
> --------------------------------------------------------
>
> Key: HADOOP-1647
> URL: https://issues.apache.org/jira/browse/HADOOP-1647
> Project: Hadoop
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.15.0
> Reporter: Enis Soztutar
> Assignee: dhruba borthakur
> Fix For: 0.15.0
>
>
> DistributedFileSystem#getFileStatus throws the following exception when invoked with new Path("/"). LocalFileSystem does not. The code to produce this error is
> {code}
> public static void main(String[] args) throws Exception{
> Configuration conf = new Configuration();
> FileSystem fs = FileSystem.get(conf);
> Path path = new Path("/");
> System.out.println("Path : \"" + path.toString() + "\"");
> System.out.println(fs.isDirectory(path));
> System.out.println(fs.getFileStatus(path).isDir());
> }
> {code}
> for Local configuration the code prints :
> {code}
> Path : "/"
> true
> true
> {code}
> For a new formatted dfs with only one file /user/enis/file.txt, Path could not be created.
> {code}
> Path : "/"
> false
> Exception in thread "main" org.apache.hadoop.ipc.RemoteException: java.io.IOException: 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.dfs.DFSFileInfo.<init>(DFSFileInfo.java:59)
> at org.apache.hadoop.dfs.FSDirectory.getFileInfo(FSDirectory.java:729)
> at org.apache.hadoop.dfs.FSNamesystem.getFileInfo(FSNamesystem.java:1301)
> at org.apache.hadoop.dfs.NameNode.getFileInfo(NameNode.java:488)
> at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:340)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:566)
> at org.apache.hadoop.ipc.Client.call(Client.java:470)
> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:165)
> at org.apache.hadoop.dfs.$Proxy0.getFileInfo(Unknown Source)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
> at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
> at org.apache.hadoop.dfs.$Proxy0.getFileInfo(Unknown Source)
> at org.apache.hadoop.dfs.DFSClient.getFileInfo(DFSClient.java:430)
> at org.apache.hadoop.dfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:319)
> at org.apache.hadoop.util.TestIsDir.main(TestIsDir.java:38)
> {code}
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