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• WPF DataBinding, CollectionViewSource, INotifyPropertyChanged

  - by plotnick

  First time when I tried to do something in WPF, I was puzzled with WPF DataBinding. Then I studied thorougly next example on MSDN: http://msdn.microsoft.com/en-us/library/ms771319(v=VS.90).aspx Now, I quite understand how to use Master-Detail paradigm for a form which takes data from one source (one table) - both for master and detailed parts. I mean for example I have a grid with data and below the grid I have a few fields with detailed data of current row. But how to do it, if detailed data comes from different but related tables? for example: you have a Table 'Users' with columns - 'id' and 'Name'. You also have another table 'Pictures' with columns like 'id','Filename','UserId'. And now, using master-detail paradigm you have to built a form. And every time when you chose a row in a Master you should get all associated pictures in Details. What is the right way to do it? Could you please show me an example?

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• SQL Server 2005: Improving performance for thousands or Insert requests. logout-login time= 120ms.

  - by Rad

  Can somebody shed some lights on how SQL Server 2005 deals with may request issued by a client using ADO.NET 2.0. Below is the shortend output of SQL Trace. I can see that connection pooling is working (I believe there is only one connection being pooled). What is not clear to me is why we have so many sp_reset_connection calls i.e a series of: Audit Login, SQL:BatchStarting, RPC:Starting and Audit Logout for each loop in for loop below. I can see that there is constant switching between tempdb and master database which leads me to conclude that we lost the context when next connection is created by fetching it from the pool based on ConectionString argument. I can see that every 15ms I can get 100-200 login/logout per second (reported at the same time by Profiler). The after 15ms I have again a series fo 100-200 login/logout per second. I need clarification on how this might affect much complex insert queries in production environment. I use Enterprise Library 2006, the code is compiled with VS 2005 and it is a console application that parses a flat file with 10 of thousand of rows grouping parent-child rows, runs on an application server and runs 2 stored procedure on a remote SQL Server 2005 inserting a parent record, retrieves Identity value and using it calls the second stored procedure 1, 2 or multiple times (sometimes several thousands) inserting child records. The child table has close to 10 million records with 5-10 indexes some of them being covering non-clustered. There is a pretty complex Insert trigger that copies inserted detail record to an archive table. All in all I only have 7 inserts per second which means it can take 2-4 hours for 50 thousand records. When I run Profiler on the test server (that is almost equivalent with production server) I can see that there is about 120ms between Audit Logout and Audit Login trace entries which almost give me chance to insert about 8 records. So my question is if there is some way to improve inserting of records since the company loads 100 thousands of records and does daily planning and has SLA to fulfill client request coming as flat file orders and some big files 10 thousands have to be processed(imported quickly). 4 hours to import 60 thousands should be reduced to 30 minutes. I was thinking to use BatchSize of DataAdapter to send multiple stored procedure calls, SQL Bulk inserts to batch multiple inserts from DataReader or DataTable, SSIS fast load. But I don't know how to properly analyze re-indexing and stats population and maybe this has to take some time to finish. What is worse is that the company uses the biggest table for reporting and other online processing and indexes cannot be dropped. I manage transaction manually by setting a field to a value and do an transactional update changing that value to a new value that other applications are using to get committed rows. Please advise how to approach this problem. For now I am trying to have a staging tables with minimal logging in a separate database and no indexes and I will try to do batched (massive) parent child inserts. I believe Production DB has simple recovery model, but it could be full recovery. If DB user that is being used by my .NET console application has bulkadmin role does it mean its bulk inserts are minimally logged. I understand that when a table has clustered and many non-clustered indexes that inserts are still logged for each row. Connection pooling is working, but with many login/logouts. Why? for (int i = 1; i <= 10000; i++){ using (SqlConnection conn = new SqlConnection("server=(local);database=master;integrated security=sspi;")) {conn.Open(); using (SqlCommand cmd = conn.CreateCommand()){ cmd.CommandText = "use tempdb"; cmd.ExecuteNonQuery();}}} SQL Server Profiler trace: Audit Login master 2010-01-13 23:18:45.337 1 - Nonpooled SQL:BatchStarting use tempdb master 2010-01-13 23:18:45.337 RPC:Starting exec sp_reset_conn tempdb 2010-01-13 23:18:45.337 Audit Logout tempdb 2010-01-13 23:18:45.337 2 - Pooled Audit Login -- network protocol master 2010-01-13 23:18:45.383 2 - Pooled SQL:BatchStarting use tempdb master 2010-01-13 23:18:45.383 RPC:Starting exec sp_reset_conn tempdb 2010-01-13 23:18:45.383 Audit Logout tempdb 2010-01-13 23:18:45.383 2 - Pooled Audit Login -- network protocol master 2010-01-13 23:18:45.383 2 - Pooled SQL:BatchStarting use tempdb master 2010-01-13 23:18:45.383 RPC:Starting exec sp_reset_conn tempdb 2010-01-13 23:18:45.383 Audit Logout tempdb 2010-01-13 23:18:45.383 2 - Pooled

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• iPad: SplitView does not rotate

  - by raj.tiwari

  I have the following setup: A subclass of UISplitViewController that creates the master and detail view controllers in the constructor. Master and Detail view controllers that both override shouldAutorotateToInterfaceOrientation to return `YES'. Detail view controller implements the UISplitViewControllerDelegate protocol and deals with the popover. I am observing two weird issues that might be interrelated: When the split view comes up (in portrait mode - default on simulator), the Master view is visible. It should not be. When I rotate the simulator, the view does not "right" itself. My UISplitViewController subclass does not override shouldAutorotateToInterfaceOrientation. However, both master and details view controllers do and return YES. Any ideas what I might be doing wrong? Is this a simulator bug? Thanks. -Raj

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• again about JPA/Hibernate bulk(batch) insert

  - by abovesun

  Here is simple example I've created after reading several topics about jpa bulk inserts, I have 2 persistent objects User, and Site. One user could have many site, so we have one to many relations here. Suppose I want to create user and create/link several sites to user account. Here is how code looks like, considering my willing to use bulk insert for Site objects. User user = new User("John Doe"); user.getSites().add(new Site("google.com", user)); user.getSites().add(new Site("yahoo.com", user)); EntityTransaction tx = entityManager.getTransaction(); tx.begin(); entityManager.persist(user); tx.commit(); But when I run this code (I'm using hibernate as jpa implementation provider) I see following sql output: Hibernate: insert into User (id, name) values (null, ?) Hibernate: call identity() Hibernate: insert into Site (id, url, user_id) values (null, ?, ?) Hibernate: call identity() Hibernate: insert into Site (id, url, user_id) values (null, ?, ?) Hibernate: call identity() So, I means "real" bulk insert not works or I am confused? Here is source code for this example project, this is maven project so you have only download and run mvn install to check output.

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• PyDev and Django: PyDev breaking Django shell?

  - by Rosarch

  I've set up a new project, and populated it with simple models. (Essentially I'm following the tut.) When I run python manage.py shell on the command line, it works fine: >python manage.py shell Python 2.6.4 (r264:75708, Oct 26 2009, 08:23:19) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. (InteractiveConsole) >>> from mysite.myapp.models import School >>> School.objects.all() [] Works great. Then, I try to do the same thing in Eclipse (using a Django project that is composed of the same files.) Right click on mysite project Django Shell with Django environment This is the output from the PyDev Console: >>> import sys; print('%s %s' % (sys.executable or sys.platform, sys.version)) C:\Python26\python.exe 2.6.4 (r264:75708, Oct 26 2009, 08:23:19) [MSC v.1500 32 bit (Intel)] >>> >>> from django.core import management;import mysite.settings as settings;management.setup_environ(settings) 'path\\to\\mysite' >>> from mysite.myapp.models import School >>> School.objects.all() Traceback (most recent call last): File "<console>", line 1, in <module> File "C:\Python26\lib\site-packages\django\db\models\query.py", line 68, in __repr__ data = list(self[:REPR_OUTPUT_SIZE + 1]) File "C:\Python26\lib\site-packages\django\db\models\query.py", line 83, in __len__ self._result_cache.extend(list(self._iter)) File "C:\Python26\lib\site-packages\django\db\models\query.py", line 238, in iterator for row in self.query.results_iter(): File "C:\Python26\lib\site-packages\django\db\models\sql\query.py", line 287, in results_iter for rows in self.execute_sql(MULTI): File "C:\Python26\lib\site-packages\django\db\models\sql\query.py", line 2368, in execute_sql cursor = self.connection.cursor() File "C:\Python26\lib\site-packages\django\db\backends\__init__.py", line 81, in cursor cursor = self._cursor() File "C:\Python26\lib\site-packages\django\db\backends\sqlite3\base.py", line 170, in _cursor self.connection = Database.connect(**kwargs) OperationalError: unable to open database file What am I doing wrong here?

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• Crawler do not create custom crawled properties

  - by user173739

  These days i have faced with very strange problem. I have development environment with MOSS 2007 SP 2 and WS 2008, i have search configured and everything works great. I have started to configuring staging environment (MOSS 2007 SP2 with June CU) and create new farm and new SSP. I have deployed my changes with package (wsp) and manually create site collections, sub webs, pages and so on. When fill crawl finishes, i see in Crawl log that all my pages have been successfully crawled and when i use some test tools to query search, my pages have been found. In crawl log there is few errors like http://mysite/sites/de/pages "The crawler could not communicate with the server. Check that the server is available and that the firewall access is configured correctly..", but all pages in this Page library were indexed. The problem is that i use custom managed properties (mapped to custom crawled properties) in search queries, but crawler didn't create crawled properties for all my new site columns. For example for site column IsAccent the crawler didn't create cralwed property ows_isAccesnt. I'm sure that i have created pages for specific content type and all my crawl categories have checked "Automatically discover new properties when a crawl takes place ". In site settings - Searchable columns i haven't got any column selected as Nocrowl. I tried to export my managed and crawled properties from dev environment to stage evironment but all my managed properties were empty, after that i recreated SSP...the result was the same... I checked specific page with tools like Sharepoint Manager 2007 and U2U Caml Query Builder 2007 that content type is correct, and i can see values of my custom site collumns.... Using U2U Caml Query Builder 2007 agains some Page library in Result tab i can see ows_IsAccent (my site collumn is IsAccent) and others site columns, but i can't find them in Crawled properties. Any idias?

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• Treeview - Link Button Post Back Problem

  - by cagin

  Hi there I' m working on a web application. That has a master page and two pages. These pages under the that master page. I am trying navigate that pages with a TreeView which on the master page. When i click to treeview node i can go to page which i want but there is no postback. But if i use linkbutton postback event happen. I use a break point on master page's pageload event. When i use treeview, v.s doesnt stop on break point line but if i use link button v.s stop on that line. How can i do postback with using treeview? Thanks for your helps

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• How to check if returning View is of type PartialViewResult or a ViewUserControl

  - by mare

  In the method FindView() I have to somehow check if the View we are requesting is a ViewUserControl. Because otherwise I get an error saying: "A master name cannot be specified when the view is a ViewUserControl." This is my custom view engine code right now: public class PendingViewEngine : VirtualPathProviderViewEngine { public PendingViewEngine() { // This is where we tell MVC where to look for our files. /* {0} = view name or master page name * {1} = controller name */ MasterLocationFormats = new[] {"~/Views/Shared/{0}.master", "~/Views/{0}.master"}; ViewLocationFormats = new[] { "~/Views/{1}/{0}.aspx", "~/Views/Shared/{0}.aspx", "~/Views/Shared/{0}.ascx", "~/Views/{1}/{0}.ascx" }; PartialViewLocationFormats = new[] {"~/Views/{1}/{0}.ascx", "~/Views/Shared/{0}.ascx"}; } protected override IView CreatePartialView(ControllerContext controllerContext, string partialPath) { return new WebFormView(partialPath, ""); } protected override IView CreateView(ControllerContext controllerContext, string viewPath, string masterPath) { return new WebFormView(viewPath, masterPath); // this line produces the error because we cannot set master page on ASCXs, so I need an "if" here } public override ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache) { if (controllerContext.HttpContext.Request.IsAjaxRequest()) return base.FindView(controllerContext, viewName, "Modal", useCache); return base.FindView(controllerContext, viewName, "Site", useCache); } } The above ViewEngine fails on calls like this: <% Html.RenderAction("Display", "MyController", new { zoneslug = "some-zone-slug" });%> The action I am rendering here is this: public ActionResult Display(string zoneslug) { WidgetZone zone; if (!_repository.IsUniqueSlug(zoneslug)) zone = (WidgetZone) _repository.GetInstance(zoneslug); else { // do something here } // WidgetZone used here is WidgetZone.ascx, so a partial return View("WidgetZone", zone); } I cannot use RenderPartial because you cannot send route values to RenderPartial the way you can to RenderAction. To my knowledge there is no way to provide RouteValueDictionary to RenderPartial() like the way you can to RenderAction().

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• Starter question of declarative style SQLAlchemy relation()

  - by jfding

  I am quite new to SQLAlchemy, or even database programming, maybe my question is too simple. Now I have two class/table: class User(Base): __tablename__ = 'users' id = Column(Integer, primary_key=True) name = Column(String(40)) ... class Computer(Base): __tablename__ = 'comps' id = Column(Integer, primary_key=True) buyer_id = Column(None, ForeignKey('users.id')) user_id = Column(None, ForeignKey('users.id')) buyer = relation(User, backref=backref('buys', order_by=id)) user = relation(User, backref=backref('usings', order_by=id)) Of course, it cannot run. This is the backtrace: File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/state.py", line 71, in initialize_instance fn(self, instance, args, kwargs) File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/mapper.py", line 1829, in _event_on_init instrumenting_mapper.compile() File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/mapper.py", line 687, in compile mapper._post_configure_properties() File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/mapper.py", line 716, in _post_configure_properties prop.init() File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/interfaces.py", line 408, in init self.do_init() File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/properties.py", line 716, in do_init self._determine_joins() File "/Library/Python/2.6/site-packages/SQLAlchemy-0.5.8-py2.6.egg/sqlalchemy/orm/properties.py", line 806, in _determine_joins "many-to-many relation, 'secondaryjoin' is needed as well." % (self)) sqlalchemy.exc.ArgumentError: Could not determine join condition between parent/child tables on relation Package.maintainer. Specify a 'primaryjoin' expression. If this is a many-to-many relation, 'secondaryjoin' is needed as well. There's two foreign keys in class Computer, so the relation() callings cannot determine which one should be used. I think I must use extra arguments to specify it, right? And howto? Thanks

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• How to publish an ASP.NET MVC website

  - by Luke Puplett

  Hello -- I've a site that I'd like to publish to a co-located live server. I'm finding this simple task quite hard. My problems begin with the Web Deploy tool (1.1) giving me a 401 Unauthorized as the adminstrator because port :8172 comes up in the errors and this port is blocked - but the documentation says "The default ListenURL is http://+:80/MsDeployAgentService"! I'm loathe to open another port and I've little patience these days so I thought bu66er it, I'll create a Web Deploy package and import it into IIS on the server over RDP. I notice first that Visual Studio doesn't use a dialog box to gather settings, or use my Publish profiles but seems to use a tab in the project properties, although I think these are ignored when importing the package anyway? I'm now sitting in the import wizard with Application Path and Connection String. I've cleared the conn string as I think this is for some ASP stuff I don't use but when I enter nothing in the Application Path, the wizard barks at me saying that basically I'm a weirdo because most people publish to folders beneath the root site. Now, I want my site to be site.com/Home/About and not site.com/subfolder/Home/About and I think being an MVC routed site that a subfolder will introduce other headaches. Should I go ahead and use the root? Finally, I also want to publish a web service to www.site.com/services/soap which I think IIS can handle. While typing this question, Amazon have delivered my IIS 7 Resource Kit, and I've been scouring the internet but actually I'm getting more confused. Comment here seems to show consensus opinion that Publish isn't for production sites and that real men roll their own. http://stackoverflow.com/questions/260525/asp-net-website-publish-vs-web-deployment-project ...I guess this was pre- Web Deployment Tool era? I'm going to experiment on a spare box for now but any assistance is welcome. Luke

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• What does this svn2git error mean?

  - by Hisham

  I am trying to import my repository from svn to git using svn2git, but it seems like it's failing when it hits a branch. What's the problem? Found possible branch point: https://s.aaa.com/repo/trunk/project => https://s.aaa.com/repo/branches/project-beta1.0, 128 Use of uninitialized value in substitution (s///) at /opt/local/libexec/git-core/git-svn line 1728. Use of uninitialized value in concatenation (.) or string at /opt/local/libexec/git-core/git-svn line 1728. refs/remotes/trunk: 'https://s.aaa.com/repo' not found in '' Running command: git branch -l --no-color * master Running command: git branch -r --no-color trunk Running command: git checkout trunk Note: checking out 'trunk'. You are in 'detached HEAD' state. You can look around, make experimental changes and commit them, and you can discard any commits you make in this state without impacting any branches by performing another checkout. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -b with the checkout command again. Example: git checkout -b new_branch_name HEAD is now at f4e6268... Changing svn repository in cap files Running command: git branch -D master Deleted branch master (was f4e6268). Running command: git checkout -f -b master Switched to a new branch 'master' Running command: git gc Counting objects: 450, done. Delta compression using up to 2 threads. Compressing objects: 100% (368/368), done. Writing objects: 100% (450/450), done. Total 450 (delta 63), reused 450 (delta 63)

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• Preview a git push

  - by Saverio Miroddi

  How can I see which commits are actually going to be pushed to a remote repository? As far as I know, whenever I pull master from the remote repository, commits are likely to be generated, even if they're empty. This causes the local master to be 'forward' even if there is really nothing to push. Now, if I try (from master): git cherry origin master I have an idea of what's going to be pushed, though this also display some commits that I've already pushed. Is there a way to display only the new content that's going to be pushed?

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• Creating a new workbook in Excel from Python breaks

  - by Marcelo Cantos

  I am trying to use the stock standard win32com approach to drive Excel 2007 from Python. However, when I try to create a new workbook, things go pear-shaped: Python 2.6.4 (r264:75706, Nov 3 2009, 13:23:17) [MSC v.1500 32 bit (Intel)] on win32 ... >>> import win32com.client >>> excel = win32com.client.Dispatch("Excel.Application") >>> wb = excel.Workbooks.Add() Traceback (most recent call last): File "<pyshell#3>", line 1, in <module> wb = excel.Workbooks.Add() File "C:\Python26\lib\site-packages\win32com\client\dynamic.py", line 467, in __getattr__ if self._olerepr_.mapFuncs.has_key(attr): return self._make_method_(attr) File "C:\Python26\lib\site-packages\win32com\client\dynamic.py", line 295, in _make_method_ methodCodeList = self._olerepr_.MakeFuncMethod(self._olerepr_.mapFuncs[name], methodName,0) File "C:\Python26\lib\site-packages\win32com\client\build.py", line 297, in MakeFuncMethod return self.MakeDispatchFuncMethod(entry, name, bMakeClass) File "C:\Python26\lib\site-packages\win32com\client\build.py", line 318, in MakeDispatchFuncMethod s = linePrefix + 'def ' + name + '(self' + BuildCallList(fdesc, names, defNamedOptArg, defNamedNotOptArg, defUnnamedArg, defOutArg) + '):' File "C:\Python26\lib\site-packages\win32com\client\build.py", line 604, in BuildCallList argName = MakePublicAttributeName(argName) File "C:\Python26\lib\site-packages\win32com\client\build.py", line 542, in MakePublicAttributeName return filter( lambda char: char in valid_identifier_chars, className) File "C:\Python26\lib\site-packages\win32com\client\build.py", line 542, in <lambda> return filter( lambda char: char in valid_identifier_chars, className) UnicodeDecodeError: 'ascii' codec can't decode byte 0x83 in position 52: ordinal not in range(128) >>> What is going wrong here? Have I done something silly, or is Python/win32com/Excel somehow broken?

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• Am I under risk of CSRF attacks in a POST form that doesn't require the user to be logged in?

  - by Monika Sulik

  I'm probably being a total noob here, but I'm still uncertain about what a CSRF (Cross-Site Request Forgery) attack is exactly. So lets look at three situations... 1) I have a POST form that I use to edit data on my site. I want this data to be edited only by users that are logged in. 2) I have a site, which can be used by both users who are logged in as well as guests. Parts of the site are for logged in users only, but there are also POST forms that can be used by all users - anonymous and not (for example a standard contact form). Should the contact form be safeguarded against CSRF attacks? 3) I have a site which doesn't have an authentication system at all (well, perhaps that's unrealistic, so lets say it has an admin site which is separate from the rest of it and the admin part is properly safeguarded). The main part of the site is only used by anonymous users. Do the POST forms on it need to be safeguarded? In the case of 1) the answer is clearly yes. But in the case of 2 and 3 I don't know (and is the difference between 2 and 3 even significant?).

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• git strategy to have a set of commits limited to a particular branch

  - by becomingGuru

  I need to merge between dev and master frequently. I also have a commit that I need to apply to dev only, for things to work locally. Earlier I only merged from dev to master, so I had a branch production_changes that contained the "undo commit" of the dev special commit. and from the master, I merged this. Used to work fine. Now each time I merge from dev to master and vice versa, I am having to cherry-pick and apply the same commit again and again :(. Which is UGLY. What strategy can I adapt so that I can seamlessly merge between 2 branches, yet retain some of the changes only on one of those branches?

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• Cross domain login - what to store in the database?

  - by Jenkz

  I'm working on a system which will allow me to login to the same system via various domains. (www.example.com, www.mydomain.com, sub.domain.com etc) The following threads form the basis of my research so far: Single Sign On across multiple domains Cross web domain login with .net membership What I want to happen is that If I am logged in on the master domain and I visit a page on a client domain to be automatically logged in on the client. Obviously If I am not logged in on the master, I will need to enter my username and password. Walkthrough: 1. User logs in on master site 2. User navigates to client site 3. Client site re-directs to master site to see if User is logged in. 4. If User is logged in on master, record a RFC 4122 token ID and send this back to the client site. 5. Client site then looks up the token ID in the central database and logs this user in. This might eventually end up running on more than once instance of PHP and Apache, so I can't just store: token_id, php_session_id, created Is there any problem with me storing and using this: token_id, username, hashed_password, created Which is deleted on use, or automatically after x seconds.

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• Hadoop streaming with Python and python subprocess

  - by Ganesh

  I have established a basic hadoop master slave cluster setup and able to run mapreduce programs (including python) on the cluster. Now I am trying to run a python code which accesses a C binary and so I am using the subprocess module. I am able to use the hadoop streaming for a normal python code but when I include the subprocess module to access a binary, the job is getting failed. As you can see in the below logs, the hello executable is recognised to be used for the packaging, but still not able to run the code. . . packageJobJar: [/tmp/hello/hello, /app/hadoop/tmp/hadoop-unjar5030080067721998885/] [] /tmp/streamjob7446402517274720868.jar tmpDir=null JarBuilder.addNamedStream hello . . 12/03/07 22:31:32 INFO mapred.FileInputFormat: Total input paths to process : 1 12/03/07 22:31:32 INFO streaming.StreamJob: getLocalDirs(): [/app/hadoop/tmp/mapred/local] 12/03/07 22:31:32 INFO streaming.StreamJob: Running job: job_201203062329_0057 12/03/07 22:31:32 INFO streaming.StreamJob: To kill this job, run: 12/03/07 22:31:32 INFO streaming.StreamJob: /usr/local/hadoop/bin/../bin/hadoop job -Dmapred.job.tracker=master:54311 -kill job_201203062329_0057 12/03/07 22:31:32 INFO streaming.StreamJob: Tracking URL: http://master:50030/jobdetails.jsp?jobid=job_201203062329_0057 12/03/07 22:31:33 INFO streaming.StreamJob: map 0% reduce 0% 12/03/07 22:32:05 INFO streaming.StreamJob: map 100% reduce 100% 12/03/07 22:32:05 INFO streaming.StreamJob: To kill this job, run: 12/03/07 22:32:05 INFO streaming.StreamJob: /usr/local/hadoop/bin/../bin/hadoop job -Dmapred.job.tracker=master:54311 -kill job_201203062329_0057 12/03/07 22:32:05 INFO streaming.StreamJob: Tracking URL: http://master:50030/jobdetails.jsp?jobid=job_201203062329_0057 12/03/07 22:32:05 ERROR streaming.StreamJob: Job not Successful! 12/03/07 22:32:05 INFO streaming.StreamJob: killJob... Streaming Job Failed! Command I am trying is : hadoop jar contrib/streaming/hadoop-*streaming*.jar -mapper /home/hduser/MARS.py -reducer /home/hduser/MARS_red.py -input /user/hduser/mars_inputt -output /user/hduser/mars-output -file /tmp/hello/hello -verbose where hello is the C executable. It is a simple helloworld program which I am using to check the basic functioning. My Python code is : #!/usr/bin/env python import subprocess subprocess.call(["./hello"]) Any help with how to get the executable run with Python in hadoop streaming or help with debugging this will get me forward in this. Thanks, Ganesh

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• Review Board workflow for Mercurial repository

  - by pachanga

  At my company we are trying to add code reviewing practices into our development process and for that purpose we decided to use Review Board. While Review Board should work out of the box for Subversion the workflow for Mercurial looks a little bit involved. Firstly it seems that only post reviewing(via post-review script) is supported for this type of repo. Secondly documentation is unclear whether post-review actually supports Mercurial(it only mentions git). Could you folks describe your workflow in detail please? Am I right in my thinking it should be something like this: Developer: clone master repo clone feature repo from local master repo hack-hack in feature repo commit into feature repo somehow run post-review from feature repo against parent master repo Reviewer: review diff if OK then pull to the master repo from the feature repo

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• dynamically created radiobuttonlist

  - by Janet

  Have a master page. The content page has a list with hyperlinks containing request variables. You click on one of the links to go to the page containing the radiobuttonlist (maybe). First problem: When I get to the new page, I use one of the variables to determine whether to add a radiobuttonlist to a placeholder on the page. I tried to do it in page)_load but then couldn't get the values selected. When I played around doing it in preInit, the first time the page is there, I can't get to the page's controls. (Object reference not set to an instance of an object.) I think it has something to do with the MasterPage and page content? The controls aren't instantiated until later? (using vb by the way) Second problem: Say I get that to work, once I hit a button, can I still access the passed request variable to determine the selected item in the radiobuttonlist? Protected Sub Page_PreInit(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.PreInit 'get sessions for concurrent Dim Master As New MasterPage Master = Me.Master Dim myContent As ContentPlaceHolder = CType(Page.Master.FindControl("ContentPlaceHolder1"), ContentPlaceHolder) If Request("str") = "1" Then Dim myList As dsSql = New dsSql() ''''instantiate the function to get dataset Dim ds As New Data.DataSet ds = myList.dsConSessionTimes(Request("eid")) If ds.Tables("conSessionTimes").Rows.Count > 0 Then Dim conY As Integer = 1 CType(myContent.FindControl("lblSidCount"), Label).Text = ds.Tables("conSessionTimes").Rows.Count.ToString Sorry to be so needy - but maybe someone could direct me to a page with examples? Maybe seeing it would help it make sense? Thanks....JB

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• Git: Can I commit my working directory to a new branch without commiting it to a current branch?

  - by Noli

  Somewhat new at Git.. I am working on a project, and had all of my tests passing on the master branch. I then made some changes, and when everything started failing, I realized that maybe I should have made those changes in a different branch. Is there I way I can commit the changes to a new branch without commiting them to my master branch, so that the master still has my passing tests?

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• Simplify a batch of git commands

  - by Bogdan Gusiev

  When I want to merge one branch to another I use to do the following(in this example master to custom): git checkout master && git pull && git checkout custom && git merge master Can somebody suggest how to simplify this? Thanks, Bogdan.

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• Working with images in asp.net MVC ViewMasterPage in design mode

  - by amit.codename13

  While designing a master page i am adding a number of images to it. I have an image tag inside the master page, <img src="../../Content/Images/img19.jpg" class="profileImage" /> When i run my app, the image doesn't show up in the browser because the src path in the page that browser gets is same as in the master page. ie. "../../Content/Images/img19.jpg" But it should have been "Content/Images/img19.jpg" If i correct the src path in master page as <img src="Content/Images/img19.jpg" class="profileImage" /> Then I can see the image in the browser but not in design mode. Any help is appreciated.

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• Microcontroller to Microcontroller SPI communication

  - by onaclov2000

  Hello again, I was doing some reading and have even gotten a "master" SPI working on my microcontroller. Here is my question, basically if the master wants to initialize a write to the slave we write to the SSPBUF, how do we control what the slave responds with? The datasheet doesn't seem really clear to me the order of events in that case. I.E. Master puts a char into the SSPBUF, this initiates the SPI module to send data to the slave, during the shift, the slave returns a byte. In the slave side, is there something that tells you you have incoming data, and you can write to your SSPBUF first, THEN accept the data? OR Do you have to write to the SSPBUF the first "return value" you want sent back before the master can have an opportunity to initiate a transfer?

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• Authenticated user cannot log in, "The user does not exist or is not unique."

  - by Aquinas

  This is a weird one. I have a WSS3 site, no MOSS, with a custom membership and role provider that authenticates against CRM. All the users have also been added to the site user list so once logged in they have correct display names. On dev and stage everything works fine, but on UAT the users can't get past the login screen. The login screen is working, in that if you type an incorrect password for a user it comes back with the right message, meaning the custom provider is working fine. If you fill the login form in correctly you are immediately redirected straight back to the login screen, with the IIS logs showing that the login screen sent the authenticated user to the site and then was sent back. Setting the site to allow anonymous access shows that the user is not logged in on the site side after authenticating correctly. The ULS logs show: The user does not exist or is not unique. Found 1 trusted forests nzct.local. Found 0 trusted domains Adding logging code to the site I have verified that the membership provider is correctly set, and can find the user when asked. Also, when accessing the site user list, I can find the SP user with the right name. It just refuses to set the current user to be the authenticated user. Weird.

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• Configurating JOOMLA's e-mail notification for new account

  - by Dion

  Dear all... I'm using Joomla 1.5 to create a local site for my office. The site will be accessed locally via intranet, and my PC will be the localhost for the site. I'm using a Login pluggin, so that anyone who wanted to enter the site should create an account. In JOOMLA, all user who created their account for the first time will receive a notification e-mail like : "Hello pras, You have been added as a User to Information Center by an Administrator. This e-mail contains your username and password to log in to http://localhost/yaddayadda/ Username: hadisuryo.prasetio Password: xxxx Please do not respond to this message as it is automatically generated and is for information purposes only." but if the user click the URL in the mail, which is, "localhost/yaddayadda/" they will not be directed to my site, but to their own PC's localhost.... My question is : How can I Modified the e-mail or the site configuration so that the URL will not be "localhost/yaddayadda/" anymore, but will be "(My-IP adress)/yaddayadda" I'm not going to host my site to a web hosting service, just using my PC as a host. I've been trying to trace on each config and .ini files...it seems that i have to do something with the "JURI" function or the "$mosConfig_live_site" on the backlink.php file $mosConfig_absolute_path = JPATH_SITE; $mosConfig_live_site = JURI :: base(); $url_array = explode('/', $_SERVER['REQUEST_URI']); Can anyone give me assistance ? Thank You

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