ListFiles from HDFS Cluster

hadoop, java

Solution

You can indeed use `getPath()` this will return you a `Path` object which let you query the name of the file.

Path p = ritr.next().getPath();
// returns the filename or directory name if directory
String name = p.getName();

The `FileStatus` object you get can tell you if this is a file or directory.

Here is more API documentation:

http://hadoop.apache.org/common/docs/r1.0.0/api/org/apache/hadoop/fs/Path.html

http://hadoop.apache.org/common/docs/r1.0.0/api/org/apache/hadoop/fs/FileStatus.html

Problem

I am an amateur with hadoop and stuffs. Now, I am trying to access the hadoop cluster (HDFS) and retrieve the list of files from client eclipse. I can do the following operations after setting up the required configurations on hadoop java client. I can perform copyFromLocalFile, copyToLocalFile operations accessing HDFS from client. Here's what I am facing. When i give listFiles() method I am getting ``` org.apache.hadoop.fs.LocatedFileStatus@d0085360 org.apache.hadoop.fs.LocatedFileStatus@b7aa29bf ``` MainMethod ``` Properties props = new Properties(); props.setProperty("fs.defaultFS", "hdfs://<IPOFCLUSTER>:8020"); props.setProperty("mapreduce.jobtracker.address", "<IPOFCLUSTER>:8032"); props.setProperty("yarn.resourcemanager.address", "<IPOFCLUSTER>:8032"); props.setProperty("mapreduce.framework.name", "yarn"); FileSystem fs = FileSystem.get(toConfiguration(props)); // Setting up the required configurations Path p4 = new Path("/user/myusername/inputjson1/"); RemoteIterator<LocatedFileStatus> ritr = fs.listFiles(p4, true); while(ritr.hasNext()) { System.out.println(ritr.next().toString()); } ``` I have also tried FileContext and ended up only getting the filestatus object string or something. Is there a possibility to take the filenames when i iterate to the remote hdfs directory, there is a method called getPath(), Is that the only way we can retrieve the full path of the filenames using the hadoop API or there are any other method so that i can retrieve only name of the files in a specified directory path, Please help me through this, Thanks.

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