Hadoop fs mkdir and testing existence FileSystem exists

Question

I can create directories in my hadoop using: hadoop fs -mkdir /test/input. I can check this by browsing localhost:50070 and it works:

/test
/tmp

But when I check for existence from java:

FileSystem fs = FileSystem.get(conf);
fs.exists(new Path("/tmp")); // returns true
fs.exists(new Path("/test")); // returns false

Can someone tell me what's wrong?

Answer 1

FileSystem.get(conf) may return the local file system where the /tmp/ folder exists and /test/not exists. Try to specify the file system that you want to get:

FileSystem fs = new Path("hdfs://localhost:8020/").getFileSystem(conf);