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• MapReduce job is hung after 1 of 5 reducers completed on single-node environment

  - by Marboni

  I have only one Data Node on my dev environment on EC2. I ran heavy MR job and in 6 hours noticed that 100% of mappers and 20% of reducers finished (1 of reducer shows 100% competition, other ones - 0%). Looks like job is hung between 2 reducer runs. I don't see any errors in log files. What it can be? P.S. Last logs of successfully finished reducer: 2012-11-09 11:29:21,576 INFO org.apache.hadoop.mapred.Task: Task:attempt_201211090523_0004_r_000000_0 is done. And is in the process of commiting 2012-11-09 11:29:22,692 INFO org.apache.hadoop.mapred.Task: Task attempt_201211090523_0004_r_000000_0 is allowed to commit now 2012-11-09 11:29:22,719 INFO org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter: Saved output of task 'attempt_201211090523_0004_r_000000_0' to /data/output/1352457275873/20121109-053433-common 2012-11-09 11:29:22,721 INFO org.apache.hadoop.mapred.Task: Task 'attempt_201211090523_0004_r_000000_0' done. 2012-11-09 11:29:22,725 INFO org.apache.hadoop.mapred.TaskLogsTruncater: Initializing logs' truncater with mapRetainSize=-1 and reduceRetainSize=-1

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• Can't select text with mouse in Word / Office 2007

  - by asc99c

  I'm having a very weird problem here for the last few months. In Word, and in fact all programs from the Office 2007 suite, I can't drag the mouse pointer to select text. I can click at a point in the text and the cursor moves correctly to that point. If I double click, the word under the cursor is selected, and triple clicking selects the whole line. However if I hold the mouse button down and drag the mouse, no text is selected. Occasionally the problem disappears and everything works fine, but it then reappears a few minutes later. Text selection with the mouse works everywhere else (Firefox, PuTTY, OpenOffice), just not in Office. The only addins are Google Desktop Office Addin, and Person Name (). For info it is Office 2007 SP3, running on Windows 7 64-bit.

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• Switching to tabs to the right or left of the current tab in Notepad++

  - by Christopher Swiedler

  How can I switch to the document to the left or right of the current document in Notepad++? For example, if I have documents A, B, and C open, and I'm currently editing B, I would like a shortcut to be able to switch to A (Alt-LeftArrow or Ctrl-Pageup) or C (Alt-RightArrow or Ctrl-PageDown). Is this possible? All I've found is a way to switch to next or previous documents based on the "history" of when the document was last opened (Ctrl-Tab and Ctrl-Shift-Tab), which are useful, but not what I want.

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• How to measure startup time and order of Windows services on boot?

  - by djangofan

  I am not asking how to measure server startup time here. I am wondering if anyone knows of a tool that can measure and show a graph of the startup time and order of all the windows services during system startup. I saw a software program shown on my local Portland news last week that does this but I am unable to remember what it was called or anything else about it. All I remember is that it was a "tech" news story to help computer users with their computers. So, I know the software exists and I am trying to find it.

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• High Availability

  - by mattjgilbert

  Udi Dahan presented at the UK Connected Systems User Group last night. He discussed High Availability and pointed out that people often think this is purely an infrastructure challenge. However, the implications of system crashes, errors and resulting data loss need to be considered and managed by software developers. In addition a system should remain both highly reliable (backwardly compatible) and available during deployments and upgrades. The argument is that you cannot be considered highly available if your system is always down every time you upgrade. For our recent BizTalk 2009 upgrade we made use of our Business Continuity servers (note the name, rather than calling them Disaster Recovery servers ? ) to ensure our clients could continue to operate while we upgraded the Production BizTalk servers. Then we failed back to the newly built 2009 environment and rebuilt the BC servers. Of course, in the event of an actual disaster there was a window where either one or the other set were not available to take over – however, our Staging machines were already primed to switch to production settings, having been used for testing the upgrade in the first place.   While not perfect (the failover between environments was not automatic and without some minimal outage) planning the upgrade in this way meant BizTalk was online during the rebuild and upgrade project, we didn’t have to rush things to get back on-line and planning meant we were ready to be as available as we could be in the event of an actual disaster.

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• Trouble dual booting Ubuntu 14.04 & Windows 8

  - by AkBKukU

  My motherboard (MSI G45-Z87) has efi, I still can't figure out how to make stuff work with it. I had Ubuntu working with Windows 8 before 14.04 came out and I did a clean install of Ubuntu when it did to upgrade. Since then I hadn't been able to boot Windows but I don't use it anyway so it didn't effect me. I tried getting it working today so I could use some adobe software. The last time I had tried to do something with the boot it was giving me warnings that my boot files were to far in the drive. So I followed this guide to use gparted and boot-repair to add a boot partition. I was able to reboot Ubuntu after that. I then proceeded to install Windows 8.1 to a different drive. Now the computer will only boot straight into Windows and if I manually select Ubuntu, but not the drive Ubuntu is on, to boot it stops on a black screen during boot after showing the Ubuntu logo. I've run boot-repair in several different ways but have had no luck. Here is the boot summary info from the recommended settings for it. I could really use some help.

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• Standalone server setup for compute capacity

  - by mikera

  I'm developing an application for my company that will require a lot of compute capacity (running some very big mathematical calculations), and looking for some form of server setup to do this. For various reasons, we want to run this on-site in our office rather than hosting it externally. It's been a while since I last had to set up my own servers so I thought I would tap into the collective wisdom of serverfault! My broad requirements are: Budget $30-50k, with an aim to get as much compute capacity as possible for that budget 64-bit servers suitable to run Ubuntu Linux + Java Some relatively standalone rack that can be installed in secure office space Fast/low latency network connections between the servers, but don't really care about connectivity to the outside world Storage capacity shared between the servers - they don't necessarily need their own storage providing they can be booted from a common image Downtime can be tolerated (since the calculations are run in batch mode) The software itself is fault-tolerant, so there is no need for extra resiliency in the server setup (cheap replaceable commodity parts will be fine in general) Given these requirements what kind of setup would you recommend and why?

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• Enable 8th bit as Meta in zsh without a warning

  - by Bostonvaulter

  In my quest to configure my shell to work exactly how I want it with respect to the alt/meta key I am having some trouble. Recently I added "bindkey -m" to my .zshrc and now whenever I start a zsh shell (ie open a terminal window) I get this error "warning: `bindkey -m' disables multibyte support". Now since I don't care much about multibyte support atm, is there a way I can disable just this warning? Even better would be a way to use 8th-bit meta as well as multibyte. Also note that this happens on a clean zsh install on 4.3.9 and 4.3.10 My reasoning for wanting bindkey -m vim: alt mappings (my own personal commands/mappings) zsh: alt mappings (such as Alt-. to recall the last argument of the previous command) emacs: alt mappings (lots of built-ins) So, is there any way to disable this warning or otherwise accomplish what I'm trying to do?

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• Drawing a texture line between two vectors in XNA WP7

  - by Krav

  I want to create a simple graph maker in WP7. The goal is to draw a texture line between two vectors what the user defines with touch. I already made the rotation, and it is working, but not correctly, because it doesn't calculate the line's texture height, and because of that, there are too many overlapping textures. So it does draw the line, but too many of them. How could I calculate it correctly? Here is the code: public void DrawLine(Vector2 st,Vector2 dest,NodeUnit EdgeParent,NodeUnit EdgeChild) { float d = Vector2.Distance(st, dest); float rotate = (float)(Math.Atan2(st.Y - dest.Y, st.X - dest.X)); direction = new Vector2(((dest.X - st.X) / (float)d), (dest.Y - st.Y) / (float)d); Vector2 _pos = st; World.TheHive.Add(new LineHiveMind(linetexture, _pos, rotate, EdgeParent, EdgeChild,new List<LineUnit>())); for (int i = 0; i < d; i++) { World.TheHive.Last()._lines.Add(new LineUnit(linetexture, _pos, rotate, EdgeParent, EdgeChild)); _pos += direction; } } d is for the Distance of the st (Starting node) and dest (Destination node) rotate is for rotation direction calculates the direction between the starting and the destination node _pos is for starting position changing Thanks for any suggestions/help!

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• Conventions for search result scoring

  - by DeaconDesperado

  I assume this type of question is more on-topic here than on regular SO. I have been working on a search feature for my team's web application and have had a lot of success building a multithreaded, "divide and conquer" processing system to work through a large amount of fulltext. Our problem domain is pretty specific. Users of the app generate posts, and as a general rule, posts that are more recent are considered to be of greater relevance. Some of the data we are trying to extract from search is very specific (user's feelings about specific items or things) and we are using python nltk to do named-entity extraction to find interesting likely query terms. Essentially we look for descriptive adjective-noun pairs and generate a general picture of a user's expressed sentiment as a list of tokens. This search is intended as an internal tool for our team to draw out a local picture of sentiments like "soggy pizza." There's some machine learning in there too to do entity resolution on terms like "soggy" to all manner of adjectives expressing nastiness. My problem is I am at a loss for how to go about scoring these results. The text being searched is split up into tokens in a list, so my initial approach would be to normalize a float score between 0.0-1.0 generated off of how far into the list the terms appear and how often they are repeated (a later mention of the term being worth less, earlier more, greater frequency-greater score, etc.) A certain amount of weight could be given to the timestamp as well, though I am not certain how to calculate this. I am curious if anyone has had to solve a similar problem in a search relevance grading between appreciable metrics (frequency, term location/colocation, recency) and if there are and guidelines for how to weight each. I should mention as well that the final fallback procedure in the search is to pipe the query to Sphinx, which has its own scoring practices. Sphinx operates as the last resort in case our application specific processing can't find any eligible candidates.

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• How to echo current document.title with Firefox Vimperator -> autocmd?

  - by shox

  When I try to do this :autocmd LocationChange .* echo document.title the first page that gets displayed makes no echo. If I proceed to the next tab, the title of the last tab gets echoed. Does anybody know how I can get for every landing on the page the title echoed instantly instead of when "leaving" the tab? And it only works every two times. If I go through my tabs 1,2,3,4,5,6,7,8 (next tab) the output will be (being at 1 currently) _blank Title of 1 _ Title of 3 _ Title of 5 _ Title of 7 _ (now being at tab 8) But I want Title of 1 Title of 2 ... Any ideas?

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• Laptop changes resolution when the lid is closed/opened

  - by RedditGuy

  hi i've had a problem for the last couple of days where the resolution on my laptop changes when i close the lid i'm running windows xp professional sp2 on a dell inspiron 1501 the video chip is an ati radeon xpress 1150 according to the catalyst control center software i've got installed which i think came with the drivers or something i've seen this happen before but i installed an old game called road rash a couple days ago after seeing it mentioned on reddit and i'm wondering if it might be related anyone know how i can stop this from happening? i have a workaround where i can manually change the resolution to something else and then change it back but that's a lot of work to do every time i close the laptop which is a lot thanks!

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• Storage replication/mirror over WAN

  - by galitz

  Hello, We are looking at storage replication between two data centers (600km apart) to support an active-passive cluster design for disaster recovery. The OS layer will be mostly Windows Server 2003/2008 with some OpenSuSE Linux used for performance monitoring on VMWare or possibly XenServer. The primary application service to replicate is Nvision. Datacenter 1 will have two storage systems for local active-passive or perhaps active-active replication with Datacenter 2 used as a last resport disaster recovery site. We have a handle on most aspects, but I am looking for specific recommendations on storage platforms that can handle remote replication cleanly. Thanks.

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• Rythmbox in Ubuntu 12.04 and Ipod touch

  - by leousa

  I don't know if anyone else is experiencing something similar to this. I have an Ipod touch bought 3.5 years ago. It received the last software update a year ago. After that update I had no problems syncing it in Ubuntu 11.04 and 11.10 (two different laptops). Transfer of music albums was flawless with banshee and it would even convert files to the right format automatically. Now, the same ipod touch, without any further software or firmware update does not work in Ubuntu 12.04 rythmbox. The device is mounted and recognized there, but when you drag/drop an album towards the device it does nothing. Before you guys tell me to do it, yes, I have tried with Banshee and gtkpod. The first also brings up an error message saying that the ipod does not support mp3 files, and gtkpod simply crashes all the time. The result is the same. What is going on here? Why a device that worked before does not work now in 12.04? I purchased some music in the Ubuntuone store, and would love to have it transferred to my ipod. Please no links to outdated online manuals with older versions of rythmbox or banshee (I've read them all). And again, nothing wrong with the ipod as it worked in 11.04 and 11.10 and it has not been updated since then. I would strongly appreciate any help provided. thank you

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• Scripting help - need to get phone number of AD accounts and then add them to contacts in trusted domain

  - by TheCleaner

  I have domain accounts that I have created as contacts in another trusted domain so that they can see them in their Exchange GAL. I need a way to extract the phone number field from UserA (user account) in DomainA and import it into UserA (contact) in DomainB. I get the logic, it's just the code (vbscript/powershell/whatever) that eludes me. The logic as I see it: Connect to source AD (ou/subtree) Extract user accounts from OU and subcontainers including first name, last name, display name, and phone number Connect to target AD (ou/subtree) Verify/match contact with extract in #2 above based on display name Update phone field with phone number in extract Write log of success and failures Anybody able to help?

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• Which server requirment for a Redmine, Git and website hosting?

  - by Ephismen

  Me and 9 other students are going to start a project that will last a minimum of 2 years, for this purpose we are looking to host all our work on a server. Here are a few tools we would like to work with: Redmine GIT Hosting a website/blog to show our work Hosting an internal and private development website/blog We haven't decided yet which OS we will install, but we were looking toward Ubuntu or Fedora. Having a limited budget, 300$/year, we would like to have some advices on the following dedicated server specifications: Kimsufi 2G: Hardware: Intel Celeron/Atom, 1.20 Ghz, 64 bits, 2Gb DDR2, HDD 1 To, Backup FTP 100Gb Network: Connection 100 Mbps, Illimited trafic Dedibox SC: Hardware: Dell Nano U2250, 1x 1,6GHz, 64 bits, 2Gb DDR2, HDD 160 Gb Network: Connection 1Gbit/sec, Illimited trafic Will these server be sufficient? Should we host the websites on another platform? Would a virtualized server be more appropriate? Thank you for your answers, Ephismen.

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• A can ping B, B can ping C but A cant ping C. How do i connect A to C (ethernet)?

  - by user16654

  I have a computer at home with ip 192.168.221.xxx I have another computer at work that I can ping and it has 2 ip addresses: 192.168.1.xxx and 192.168.0.xxx. Those last 2 addresses have the same gateway ie 192.168.1.1 . The computer at work is connected to a hub. That hub also has an embedded device connected to it with address 192.168.0.xxx Now from my home computer I cannot ping this embedded device. How would I connect to it without changing the subnetwork it connects to? I can ping the embedded device from my work computer and I can ping the work computer from my home computer. So I am trying to connect to the embedded device from my home computer through my work computer. Port forwarding? how would I establish that on Ubuntu?

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• Creating Engaging Online Experiences is Easy and Intuitive for Marketers with Oracle WebCenter Sites 11g

  - by Christie Flanagan

  Last month, we announced the availability of Oracle WebCenter Sites 11g, the latest release of our web experience management solution. This new release is really geared toward enabling marketers and business users to drive customer acquisition and brand loyalty by simplifying the whole process of creating, managing and optimizing engaging online experiences.  To show you just how this works, we’ve created the video below which takes you through the tasks a typical marketer might execute using Oracle WebCenter Sites to manage their online presence -- everything from page editing to page creation, right on through to optimizing the mobile experience and moderating user-generated comments and reviews is covered here. I hope this video has give you a flavor for just how easy and intuitive it is for marketers and other business users to manage engaging and interactive online experiences using Oracle WebCenter Sites.  To see more about the new release, please check out the recording of our launch webcast. On Demand Webcast - Introducing Oracle WebCenter Sites: Transforming the Online Experience Enabling marketers and business users is a key requirement for creating and managing contextually relevant, social, and interactive online experiences. Oracle WebCenter Sites transforms the online experience into one that is simple and intuitive to manage as a content contributor, encourages interaction between site visitors and their social networks, and provides marketers with automated targeting options for optimizing online engagement. View this webcast now to learn more.

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• Live CD installer gets stuck with a grayed out forward button.

  - by TRiG

  I have a CD with Ubuntu 10.10 and a laptop with Ubuntu 8.10. The laptop had all sorts of crud on it, and anything I wanted to keep was backed up on an external drive, so I was happy to do a wipe and reinstall instead of an update. So after a bit of faffing about trying to work out how to get the thing to boot from the CD drive, I did that. So the screen comes up with the choice: the options are Try Ubuntu and Install Ubuntu. I choose to install and to overwrite my current installation. So far so good. I then get a progress bar labelled something like copying files (I forget the exact wording) and further options to fill in for my location, keyboard locale, username and password. On each of these screens there are forward and back buttons. On the last screen (password), the forward button is greyed out. Well, I think to myself, no doubt it will become active when that copying files progress bar completes. The progress bar never completes. It hangs. And the label changes from copying files to the chirpy ready when you are. The forward button remains greyed out. The back button is as unhelpful as you'd expect it to be. And there's nothing else to click. We have reached an impasse. I tried restarting the laptop, to test whether it actually was properly installed. It wasn't. I tried to run Ubuntu live from the CD, to test whether the disk was damaged. That wouldn't work either, but I suspect it's just because the laptop is old and has a slow disk drive. I'm typing this question on another computer using the Ubuntu live CD and it's working fine. So there's nothing wrong with the CD.

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• LAMP server has gone down a few times. Ideas for server optimization?

  - by MattB

  Hi all, Our production web server has gone down a few times over the course of the last half year. In the end, we've needed to contact the web host and have them restart as I'm unable to even SSH in. This appears to only affect the web server and not the MySQL database server which is separate. When it affects the web server, all hosted websites time out. I'd like to examine web server optimization/corrections to get to the root of this issue. Any recommendations on how to proceed with that? I'm sure log files would play a role. I'm able to find my way around a Linux-based server and make needed changes, but would be interested in any tips I may not have thought of yet. It may be best for us to speak with an outside consultant as another option. Thanks.

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• how can i get list of created and deleted files on the server?

  - by max

  i have a image sharing website , users log and upload image last night i've lost about 30 newly-consecutive uploaded images ... i mean they have been uploaded ... apparently ... they are in the database but the actual image on the server is gone ! error log doesn't show anything ... so i thought my best option is to check list of created and deleted files ... if there is any ! is there a log file for created and deleted files on the server ? i'm using directadmin

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• Facing a character towards the mouse

  - by ratata

  I'm trying to port a simple 2d top down shooter game from C++(Allegro) to Java and i'm having problems with rotating my character. Here's the code i used in c++ if (keys[A]) RotateRight(player, degree); if (keys[D]) RotateLeft(player, degree); void RotateLeft(Player& player, float& degree) { degree += player.rotatingSpeed; if ( degree >= 360 ) degree = 0; } void RotateRight(Player& player, float& degree) { degree -= player.rotatingSpeed; if ( degree <= 0) degree = 360; } And this is what i have in render section: al_draw_rotated_bitmap(player.image, player.frameWidth / 2, player.frameHeight / 2, player.x, player.y, degree * 3.14159 / 180, 0); Instead of using A-D keys i want to use mouse this time. I've been searching since last night and came up to few sample codes however noone of them worked. For example this just made my character to circle around the map: int centerX = width / 2; int centerY = height / 2; double angle = Math.atan2(centerY - mouseY, centerX - mouseX) - Math.PI / 2; ((Graphics2D)g).rotate(angle, centerX, centerY); g.fillRect(...); // draw your rectangle Any help is much appreciated.

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• How to troubleshoot if a zip file is valid or if it is big file size to be unzipped ?

  - by mireille raad

  Hello , I am trying to unzip a file with the size of 2GB I am getting the following error : unzip CLTE_C_08.zip Archive: CLTE_C_08.zip End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. unzip: cannot find zipfile directory in one of CLTE_C_08.zip or CLTE_C_08.zip.zip, and cannot find CLTE_C_08.zip.ZIP, period. After some googling, some people say that this error is because the file is too big, others say because file is corrupt, others say that it could be a not unix archive. So my question , how to find out if file is valid archive file on my Centos and what is the command/trick to uncompress big files ( if any ) Thanks in advance :)

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• Under what circumstances might an IIS6 website be automatically deleted?

  - by E. Anderson

  Late last week my colleagues did some hardware maintenance on one of our vmWare esxi servers. One of the guests is a Windows Server 2003 Web Edition system that runs our low-traffic web sites. We discovered this morning that one of those websites was no longer working with what appeared to be an SSL error. After logging in, I found that the web site in question had been deleted from IIS! Is it possible for this to happen without a user actually going in and deleting that single web site? All of the other sites were fine. The files for the site in question had not been touched. I just re-created the web site, assigned the SSL cert, and everything was working again. When I logged in, I did see the 'Unexpected Shutdown' dialog.

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• Transferring Postfix install to new computer

  - by mlissner

  I have postfix installed on one computer, with DKIM and SPF working properly. What I'd like to do is start using a different computer instead, with the minimal amount of fuss. Mail servers have a way of baffling me, but I know there are things with cryptography going on here that I don't fully understand (and I don't really care to - I figured it out when I set up the last computer about a year ago, and am happy not to delve into it again). Right now, I'm working on the early steps of this process -- installing postfix on the new machine, and getting it going. Are there specific steps I could take to move the correct configs and key files and such to the new computer?

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