hdfs - Unable to create file using Pail DFS -


newbie here. trying run code nathan marz's book big data dfs datastore using pail. doing wrong? trying connect hdfs vm. tried replacing hdfs file. appreciated.

public class apptest {     private app app = new app();     private string path = "hdfs:////192.168.0.101:8080/mypail";      @before     public void init() throws illegalargumentexception, ioexception{         filesystem fs = filesystem.get(new configuration());         fs.delete(new path(path), true);     }      @test public    void testappaccess() throws ioexception{         pail pail = pail.create(path);           typedrecordoutputstream os = pail.openwrite();           os.writeobject(new byte[] {1, 2, 3});           os.writeobject(new byte[] {1, 2, 3, 4});           os.writeobject(new byte[] {1, 2, 3, 4, 5});           os.close();       } }

get error - 

java.lang.illegalargumentexception: wrong fs: hdfs:/192.168.0.101:8080/mypail, expected: file:///     @ org.apache.hadoop.fs.filesystem.checkpath(filesystem.java:645)     @ org.apache.hadoop.fs.rawlocalfilesystem.pathtofile(rawlocalfilesystem.java:80)     @ org.apache.hadoop.fs.rawlocalfilesystem.deprecatedgetfilestatus(rawlocalfilesystem.java:529)     @ org.apache.hadoop.fs.rawlocalfilesystem.getfilelinkstatusinternal(rawlocalfilesystem.java:747)

on replacing hdfs file file:///

java.io.ioexception: mkdirs failed create file:/192.168.0.101:8080/mypail (exists=false, cwd=file:/users/joshi/git/projectcsr/projectcsr)     @ org.apache.hadoop.fs.checksumfilesystem.create(checksumfilesystem.java:442)     @

i came across same problem , solved it! should add core-site.xml hadoop configuration object, should work:

configuration cfg = new configuration(); path core_site_path = new path("path/to/your/core-site.xml"); cfg.addresource(core_site_path); filesystem fs = filesystem.get(cfg);

i guess same programmatically adding property fs.defaultfs cfg object

source: http://opensourceconnections.com/blog/2013/03/24/hdfs-debugging-wrong-fs-expected-file-exception/


Comments

Post a Comment

Popular posts from this blog

c# - Validate object ID from GET to POST -

i have method allows user access comment have made on site. have post method lets them update comment. my normal solution send entire comment model through, let them update it, update on database when post back. involve sending commentid through in hiddenfor , can manipulated. how can verify commentid sent in get method same i'm getting in post , not able alter comment wish? how can verify commentid sent in method same i'm getting in post? basically have validate following things in post - user logged-in user. authenticated users post comments. commentid in post , should valid commentid , should present in database. userid associated logged-in user should same userid associated comment . comment should contain userid column, can check @ time of update. to make sure update happens comment has been sent in get - hold commentid in session , in post action compare commentid value in session .
Read more

node.js - Custom Model Validator SailsJS -

when using custom model validator checks record within model. return within spread doesn't seem end control flow. //post.js model /** * custom validator **/ types: { isuservalid: function(user_id) { var promise = require('bluebird'); promise.all([ user.findone({id: user_id}) ]) .spread(function(user) { console.log(user); if (user === null || user === undefined) { console.log('failed'); return false; }else{ console.log('passed'); return true; } }); } }, my response standard validation failed response. { "error": "e_validation", "status": 400, "summary": "1 attribute invalid", "model": "post", "invalidattributes": { "owner": [ { "rule": "isuservalid", ...
Read more

php - Find a regex to take part of Email -

i have following emails need extract part from: bestellnummer xxx: 1 von xxx, 1er pack ------------- anfang der nachricht ------------- foo bar baz foo bar baz // <<<<< need text here ------------- ende der nachricht ------------- ------------- anfang der nachricht ------------- foo bar baz foo bar baz ------------- ende der nachricht ------------- there 0 unlimited occurences of ------------- anfang der nachricht ------------- ------------- ende der nachricht ------------- and i'm able extract first part regex: $re = "/------------- .*? -------------.?(.*?).?------------- .*? -------------/s"; but, i'm quite new on learning regex, i'm pretty sure there must better regex extract part (foo bar baz foo bar baz) of text between ------------- anfang der nachricht ------------- ------------- ende der nachricht ------------- as can in different languages, i'm using .? to match between hyphens. i...
Read more