distributed

问题 Introduction Hi, I am going to ask a question which seems utopic for me, but I need to know if there is a way to achieve what I need. And if not, I need to know why not . The idea Suppose I have a database structure, in MySql . I want to create some solution to allow anyone (no matter who, no matter where) to have a synchronized copy (updated clone) of this database (with its content) Well, and it is not going to be just one synchronized copy, it could (and should) be a multiple replication

问题 I was able to set this up successfully on my local and on production, as long as the user credentials used on running the script is a sysad. This url (http://www.excel-sql-server.com/excel-import-to-sql-server-using-distributed-queries.htm) By Sergey Vaselenko was very helpful It's been up and running for months already. And just all of a sudden, sometime around last week, I received a complaint from one of our users who utilizes the uploader that they can no longer upload any excel files.

问题 The in-house developed software where I work connects directly to a mysql server here in our office via our devexpress orm (XPO). Performance is great. We're opening another office... cross country. Performance: not so great. The requirement is that the software be as responsive in both offices as it is in this office and that the data from one office be available to the other 'in real time'. Something of this scale is totally new to me. I'm not averse to bringing in a consultant who's done

问题 I am a bit confused about this. If you're building a distributed application, which in some cases may perform parallel operations (although not necessarily mathematical), should you use ASIO or something like MPI? I take it MPI is a higher level than ASIO, but it's not clear where in the stack one would begin. 回答1: As far as I know MPI is currently incapable of handling the situation, when the new distributed nodes want to join the already started group. The problems also may occur if one of

问题 I need a multi master database to let users talk from different continents. Each user will write his data to his local master database and it will replicate data to other master databases in other counties/continents. The problem is that I can't store all copies of all users data in all data centers. I need something like a database/solution which will let me to set a replication level. I need to have ability read any data from any nodes but store data on several nodes (on 3 nodes but not on

问题 I have a problem using a distributed WSDL File (scheme / other definitions are declared outside the actual WSDL) with PHP's SoapClient. This is the fault message I got: SOAP-ERROR: Parsing WSDL: 'getSomeInfo' already defined. After some googling, it seems to be a bug inside PHP as someone else discovered exactly the same problem: http://bugs.php.net/bug.php?id=45282 Has there been any bug fix(es)? Any solution to work around this bug? I think posting a code snippet is senseless, since the

问题 I set net_ticktime value to 600 seconds. net_kernel:set_net_ticktime(600) In Erlang documentation for net_ticktime = TickTime: Specifies the net_kernel tick time. TickTime is given in seconds. Once every TickTime/4 second, all connected nodes are ticked (if anything else has been written to a node) and if nothing has been received from another node within the last four (4) tick times that node is considered to be down. This ensures that nodes which are not responding, for reasons such as

问题 I'm developing a distributed environment, mostly in PHP. A lot of the projects that I have share some of the same code. For example my logging code (based on log4php but with some custom additions). I can just copy-paste this code in every project, but naturally, if I change anything in it I need to re-paste it everywhere and 'hope' it doesn't change anything. Obviously not a good way. Now, I was wondering: what is the best and simplest way of sharing this code? I'm hoping there is something

问题 I've been using RMI for a project I am currently working on and I want to bind from multiple hosts to a single RMI registry. However when I attempt to do so I get an error saying java.rmi.AccessException: Registry.Registry.bind disallowed; origin / 192.168.0.9 is non-local host I did so googling and it seems that RMI stops remote hosts from binding by default, what I want to know is there some way of overriding or bypassing this? If anyone any suggestions on how to get past this issue they

问题 I have updated my Dask from version 0.14.3 to 0.15.0, and distributed from 1.16.3 to 1.17.0. BokehWebInterface has been removed from this version. The homepage can be loaded http://localhost:8787, but I can't access tasks, status, workers(It tries to reload until all task are finished and then gives can't reach error). Everything used to work on the earlier version. loop = IOLoop.current() t = Thread(target=loop.start) t.setDaemon(True) t.start() workers = [] services = {('http', HTTP_PORT):