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  • Hadoop:Only master node does the work

    - by user287722
    I've setup a Hadoop 2.2 cluster with 1 master node(namenode and secondary namenode) and 3 slave nodes(datanode and namenode on each one).All of the machines use Linux Mint 64bit. When I run my MapReduce program, writen in Java, I can only see that master node is using extra CPU and RAM. Slave nodes are not doing a thing. I've checked the logs from all of the namenodes and there is nothing wrong with the namenodes on slave nodes. Resource Manager is running and all of the slave nodes can see the Resource Manager. I used this http://n0where.net/hadoop-2-2-multi-node-cluster-setup/ tutorial to configure my nodes. Datanodes are working in terms of distributed data storing but I can't see any indication of distributed data processing. Do I have to configure the xml configuration files in some other way so all of the machines will process data while I'm running my MapReduce Job?

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  • Can turning off drm_kms_helper polling affect screen brightness control?

    - by dodecaphonic
    I have a Samsung R430 notebook that has been running Ubuntu for close to a year, now. Since I've upgrated to Maverick, I've been dealing with little, but increasingly annoying issues, that put my faith to question. The first one, a CPU-intensive set of drm_kms_helper, made me compile my own kernel and set polling to off just so I could move my mouse without frequent stuttering. That led me to dealing with a screen that gets dimmer and dimmer after each sleep/wake-up cycle, which eventually leads me to reboot. Since I have seen some KMS and brightness related bugs around, I was wondering if it is a definite cause for my problem. If so, has there been any advance on the excessive polling issue for those of us plagued by it?

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  • Inserting asyncronously into Oracle, any benefits?

    - by Karl Trumstedt
    I am using ODP.NET for loading data into Oracle. I am bulking inserts into groups of a 1000 rows each call. Is there any performance benefits in calling my load method asynchronously? So say I want to insert 10000 rows, instead of making 10 calls synchronously I make 10 calls asynchronously. My database is using ASSM right now but otherwise plenty of freelists are used of course. The database server has several cores as well. My initial tests seem to point to a performance increase, but maybe there is something I cannot see? Potential deadlock or contention issues? Of course, there is added complexity in handling transactions and such doing my load this way.

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  • Deploy SMO application to workstation without SQL Server 2008 installed

    - by Matt
    I am trying to deploy an application that uses SMO on a workstation without SQL Server installed on it. The instance the app is connecting to is SQL Server 2008. The application is failing with: Could not load file or assembly 'Microsoft.SqlServer.Replication, Version 10.0.0.0, Culture=neutral, PublicKeyToken=89845cdc8080cc91' or one of its dependencies. An attempt was made to load a program with an incorrect format. The assembly in question is in the same path as my application as well as system32. I am running this on a Windows 7 64 bit box. I have run SQL Native Client, CLR, and SMO MSIs from the 2008 SMO redist download page. This app worked fine when connecting to SQL Server 2005. What gives?

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  • How to play sound from libray in AS3?

    - by Ullallulloo
    In Flash 10/AS3, I added some sound and it seems to be working alright, but I think I'm doing it wrong. I imported the sound into the library, but I believe that it's reloading it from the folder with the swf/sound. I'm loading them like so: var request1:URLRequest = new URLRequest("CLICK8C.mp3"); clickSound = new Sound(); clickSound.addEventListener(Event.COMPLETE, completeHandler); clickSound.load(request1); Is there a way to get it to just load it from the library?

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  • The application compiz has closed unexpectedly

    - by suhaas
    I have installed Ubuntu 12.10 on my desktop. (Pentium 4, 80 GB hard disk, 2 GB RAM, 32-bit CPU.) And I have installed Windows XP. I made a 40 GB partition for windows and 40 GB for Ubuntu. I installed Ubuntu and it said "installation is complete" and asked me to restart. I restarted the PC and logged in. After 1 minute I get a message like this: The application compiz has closed unexpectedly. Then I closed it. After that it just stays in blank screen nothing shows up. What should I do?

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  • HP dv6-2119tx cant find the built in tv tuner?? Ubuntu 12.10

    - by Mat
    Installed Ubuntu 12.10 yesterday and I've been playing around trying to get all the drivers for my dv6. I have taken care of the the graphics card and the sound card which to be honest is not the greatest drivers I have found. Specs are Intel(R) Core(TM) i7 CPU Q 720 @ 1.60GHz with nvidia gt230 My problem atm is the tv tuner card! Ive searched everywhere but i cant even find something to start on. I guess I am still clueless but I really dont know what to do??? I really dont want windows anymore so if anyone could guide me Id really appreciate it. Thanks...

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  • javascript - how to call a function newly added from ajax

    - by strike_noir
    I have a coding difficulty which have been asked in this forum before: Calling a JavaScript function returned from a Ajax response But I didn't find the answers quite satisfying. To be more precise of the problem I'm dealing, here is the details: I dynamically load a document (HTML and javascript) using jquery var url = 'document.php'; $('#container').load(url); And then I want to call the functions from that document.php. Due to my requirement, I don't want to call the function after the documents' loaded, but rather to call it later when I need it. Because it was dynamically loaded, the DOM doesn't recognize the functions. How to properly call this function? Thank you

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  • Can someone explain why Chromium is difficult to build for Ubuntu?

    - by vasa1
    I hope this question is not regarded as a duplicate of Does someone know why the Chromium daily package isn't build anymore? because that question relates to daily builds and not to "stable" Chromium available from the Software Center. So what are the technical difficulties that the Chromium team is facing? A very similar question has been asked in Default Browser Follow-up. I would very much to have an updated Chromium stable on my system. Also, is the problem of building Chromium restricted to 32-bit versions? (I have a 64-bit CPU but just 4 GB RAM and so I'm staying with 32-bit all the way.) I'm asking this partly in the light of the discussions, here for example, about having Chromium as the default web browser in future releases.

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  • Google Map Web Service working on local but not online

    - by Julien
    Hi all, I have a problem with a Javascript request to the Google Map Api Web Service : if I have the HTML file on my computer it works, but it doesn't work online. Here's the code : url = 'http://maps.google.com/maps/api/geocode/json?address=Senador+Francisco+Quindimil+Y+Carabobo+Por+Carabobo,Ciudad+Autonoma+de+Buenos+Aires,Argentina&sensor=false'; $.get(url, function(data) { $('#result').html(data); alert('Load was performed.'); }, 'text'); This sample is just supposed to load the "data" in the "result" element. When it is offline, the "data" has text, but not when it is online. Sample here : Online Web Service Test Could one of you guys help ? Thanks a lot !

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  • Which Linux OS should I use?

    - by dylan0005
    I have use Ubuntu 10.04 & 12.04 but my problem is disk space, I just have 4GB of HDD! awesome considering all hardware that exists nowadays! Notebook Asus eeePC 900 with 2Gb of ram, intel inside CPU. So, which is the best OS should I use? I need one that have no problems with compatibily also that's not be so old. I've tried some of lightly versions like Puppy, slax, LPS us army OS, Precise.... BUT I don't like any of them. What do you think about Debian or Linux Mint?

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  • Django - Check users messages every request

    - by Hanpan
    Hi, I want to check if a user has any new messages each time they load the page. Up until now, I have been doing this inside of my views but it's getting fairly hard to maintain since I have a fair number of views now. I assume this is the kind of thing middleware is good for, a check that will happen every single page load. What I need it to do is so: Check if the user is logged in If they are, check if they have any messages Store the result so I can reference the information in my templates Has anyone ever had to write any middleware like this? I've never used middleware before so any help would be greatly appreciated.

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  • CodeIgniter Form Validation

    - by mmcglynn
    I am trying to set up validation on a simple contact form that is created using the form helper. No validation at all occurs. What is wrong? In the code below, the “good” keyword always shows, regardless of what is entered into the form, and the saved values set via set_value are never shown. Controller // Contact function contact() { $data['pageTitle'] = "Contact"; $data['bodyId'] = "contact"; $this->load->library('form_validation'); $config_rules = array ('email' => 'required','message' => 'required'); $this->form_validation->set_rules($config_rules); if ($this->form_validation->run() == FALSE) { echo "bad"; $data['include'] = "v_contact"; $this->load->view('v_template',$data); } else { echo "good"; $data['include'] = "v_contact"; $this->load->view('v_template',$data); } } View echo validation_errors(); echo form_open('events/contact'); // name echo form_label('Name', 'name'); $data = array ( 'name' => 'name', 'id' => 'name', 'maxlength' => '64', 'size' => '40', 'value' => set_value('name') ); echo form_input($data) . "\n<br />"; // email address echo form_label('Email Address', 'email'); $data = array ( 'name' => 'email', 'id' => 'email', 'maxlength' => '64', 'size' => '40', 'value' => set_value('email') ); echo form_input($data) . "\n<br />"; // message echo form_label('Message', 'message'); $data = array ( 'name' => 'message', 'id' => 'message', 'rows' => '8', 'cols' => '35', 'value' => set_value('message') ); echo form_textarea($data) . "\n<br />"; echo form_submit('mysubmit', 'Send Message'); echo form_close();

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  • Inconsistent Behavior From Declared DLL Function

    - by Steven
    Why might my GetRawData declared function return a correct value when called from my VB.NET application, but return zero when called from my ASP.NET page? The code is exactly the same except for class type difference (Form / Page) and calling event handler (Form1_Load, Page_Load). Note: In the actual code, #DLL# and #RAWDATAFILE# are both absolute filenames to my DLL and raw data file respectively. Note: The DLL file was not created by Visual Studio. Form1.vb Public Class Form1 Declare Auto Function GetRawData Lib "#DLL#" (ByVal filename() As Byte, _ ByVal byteArray() As Byte, _ ByVal length As Int32) As Int32 Private Sub Form1_Load(ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles MyBase.Load Dim buffer(10485760) As Byte Dim msg As String, length As Integer = 10485760 Dim filename As String = "#RAWDATAFILE#" length = GetRawData(Encoding.Default.GetBytes(filename), buffer, length) Default.aspx.vb Partial Public Class _Default Inherits System.Web.UI.Page Declare Auto Function GetRawData Lib "#DLL#" (ByVal filename() As Byte, _ ByVal byteArray() As Byte, _ ByVal length As Int32) As Int32 Protected Sub Page_Load(ByVal sender As Object, _ ByVal e As System.EventArgs) Handles Me.Load Dim buffer(10485760) As Byte Dim msg As String, length As Integer = 10485760 Dim filename As String = "#RAWDATAFILE#" length = GetRawData(Encoding.Default.GetBytes(filename), buffer, length)

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  • How can I fix the compiz effects lag in unity?

    - by Samir
    I've recently installed ubuntu 11.04, and I actually liked Unity (although many others prefer Gnome), but there seems to be a lag problem. Every time I press the super button to bring out the Dash, or Super+W to show all windows, or any other action that involves some sort of effect, the effect lags a bit, and it could get really annoying. I've seen a fix using CompizConfig Settings Manager, but that doesn't seem to work for me. I've got a NVidia 9800 GT 1 GB video card, a 2 GB Ram, and not sure about the CPU (if you need it, tell me and I'll figure it out). Any help would be appreciated Thanks in advance.

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  • to avoid page refresh during button click event in asp.net

    - by ush
    public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) // If page loads for first time { Session["update"] = Server.UrlEncode(System.DateTime.Now.ToString()); // Assign the Session["update"] with unique value //=============== Page load code ========================= //============== End of Page load code =================== } } protected void Button1_Click(object sender, EventArgs e) { if (Session["update"].ToString() == ViewState["update"].ToString()) // If page not Refreshed { //=============== On click event code ========================= Label1.Text = TextBox1.Text; //lblDisplayAddedName.Text = txtName.Text; //=============== End of On click event code ================== // After the event/ method, again update the session Session["update"] = Server.UrlEncode(System.DateTime.Now.ToString()); } else // If Page Refreshed { // Do nothing } } protected override void OnPreRender(EventArgs e) { ViewState["update"] = Session["update"]; } } this is not working for high resolution gradient background

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  • CodeIgnitor is generating multiple sessions in the database, why?

    - by Derrick
    Ive got a site that does a few ajax calls on page load, now for some reason, codeIgnitor is inserting 4 sessions (I'm assuming for each ajax call) as you load the page. I'm storing the sessions in the database. I'm pretty sure there should only be one session per browser? FF seems to only generate one, other browsers seem to create a whole bunch of sessions. Multiple sessions for the same user are giving me some serious authentication problems. any ideas?

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  • jquery in ajax loaded content

    - by Kim Gysen
    My application is supposed to be a single page application and I have the following code that works fine: home.php: <div id="container"> </div> accordion.php: //Click functions: load content $('#parents').click(function(){ //Load parent in container $('#container').load('http://www.blabla.com/entities/parents/parents.php'); }); parents.php: <div class="entity_wrapper"> Some divs and selectors </div> <script type="text/javascript"> $(document).ready(function(){ //Some jQuery / javascript }); </script> So the content loads fine, while the scripts dynamically loaded execute fine as well. I apply this system repetitively and it continues to work smoothly. I've seen that there are a lot of frameworks available on SPA's (such as backbone.js) but I don't understand why I need them if this works fine. From the backbone.js website: When working on a web application that involves a lot of JavaScript, one of the first things you learn is to stop tying your data to the DOM. It's all too easy to create JavaScript applications that end up as tangled piles of jQuery selectors and callbacks, all trying frantically to keep data in sync between the HTML UI, your JavaScript logic, and the database on your server. For rich client-side applications, a more structured approach is often helpful. Well, I totally don't have the feeling that I'm going through the stuff they mention. Adding the javascript per page works really well for me. They are html containers with clear scope and the javascript is just related to that part. More over, the front end doesn't do that much, most of the logic is managed based on Ajax calls to external PHP scripts. Sometimes the js can be a bit more extended for some functionalities, but all just loads as smooth in less than a second. If you think that this is bad coding, please tell me why I cannot do this and more importantly, what is the alternative I should apply. At the moment, I really don't see a reason on why I would change this approach as it just works too well. I'm kinda stuck on this question because it just worries me sick as it seems to easy to be true. Why would people go through hard times if it would be as easy as this...

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  • Custom Extension not showing up wthin experimental instance

    - by user1333524
    I have a VSIX extension that I created which shows up in Visual Studio 2010 and works as designed. However I am attempting to build some Visual Studio automation which relies on this Extension and although its present in the project where I am building my automation package, when I run the package project, the visual studio experimental solution loads no problem, however when I look within the Extension Manager I do not see my registered Extension (even though it shows up within my Visual Studio project where I am building my extension. The extension is a custom shell for LightSwitch which may be a clue as to why it is not showing within my experimental instance of Visual Studio, not sure as I see other extensions I built and registered for LightSwitch showing up. Of course my issue is that when I attempt to load a solution that has a dependency on my LightSwitch extension, which otherwise loads fine outside of the Experimental Instance, fails due to the fact it can't locate my custom extension when I try to load the solution within my experimental solution.

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  • how to get apache log like debugging in Android logcat

    - by Nav
    I am currently using a webview to load a webpage which contains lots of javascript and having lots of trouble debugging what exactly gets loaded and when in the webview . Then I saw this post where the op seems to be using apache log to monitor webpage load events in his webview. Enhance webView performance (should be the same performance as native Web Browser) Can I get a similar utility plugin or anything so that I can use it with logcat in ddms view. If possible please provide some resource as to how to configure it for android.

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  • Unable to empty the rubbish bin

    - by gman
    When I attempt to empty the rubbish bin the preparing window opens but nothing happens. In testing I tried to delete 1 file from the rubbish bin and received a time-out error. No files are removed from the rubbish bin after this. I have added a screen shot that includes a display of system monitor that shows high CPU usage for trash and Nautilus; not sure whether it is related. Click for a full-resolution image. Also, on a separated note, Bleachbit was also freezing on me, which may or may not be related?

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  • Wrong download of Ubuntu 13.10 desktop: AMD instead of wanted Intel [duplicate]

    - by L. Williams
    This question already has an answer here: Difference between the i386 download and the amd64? 5 answers My PCs are Intel CPUs e.g. Core2 Quad, 64 bit, no AMD in network, but from ubuntu.com/download site, selecting 13.10 Desktop for 64 bit, it repeatedly only offers *AMD.ISO version, which of course fails to install on my Intel (or Atom) based PCs. Wuzzup, and what URL has a download for the Intel CPU systems? Rem: this is for Saucy 13.10 Desktop 64 OS ISO. TIA.

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  • Data persistance with BufferedReader and PrintWriter?

    - by Nazgulled
    I have this simple application with a couple of classes which are all related. There's one, the main one, for which there is only one instance of. I need to save save and load that using a text stream. My instructor requirement is BufferedReader to load the stream and PrintWriter to save it. But is this even possible? To persist a data object/class with a text stream? I know how to do it with and object, using serialization. But I don't see how am I supposed to do it using text streams. Suggestions?

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  • How call soap service using jQuery

    - by Alen D
    I have a problem with calling soap service from php page. I was implemented two page,first page was created in php, and second page was created in asp.net. In asp.net application I have SOAP service, which methods should be called from php. Method on my SOAP service, look like this: [WebMethod] [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public bool UpdateVotes(string vote) { //Code } On PHP application I call UpdateVotes method on the next way: $.ajax({ type: "POST", url: "http://localhost:5690/VoteServices.asmx/UpdateVotes", data: "{'vote': '" + vote + "'}", contentType: "application/json; charset=utf-8", dataType: "json", success: function (msg) { }, error: function (xhr, status, error) { } }); First I run asp.net application with SOAP service, and than I start php aplication. When i click on button for calling web method on service i browser console i got this error: Failed to load resource: the server responded with a status of 500 (Internal Server Error) http://localhost:5690/VoteServices.asmx/UpdateVotes XMLHttpRequest cannot load http://localhost:5690/VoteServices.asmx/UpdateVotes. Origin http://localhost:8080 is not allowed by Access-Control-Allow-Origin.

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