data-transfer

Transfer file out from HDFS

不问归期 提交于 2019-12-02 20:34:37
I want to transfer files out from HDFS to local filesystem of a different server which is not in hadoop cluster but in the network. I could have done: hadoop fs -copyToLocal <src> <dest> and then scp/ftp <toMyFileServer>. As the data is huge and due to limited space on local filesystem of hadoop gateway machine, I wanted to avoid this and sent data directly to my file server. Please help with some pointers on how to handle this issue. So you probably have a file with a bunch of parts as the output from your hadoop program. part-r-00000 part-r-00001 part-r-00002 part-r-00003 part-r-00004 So

How to transfer “data” between two device (android,iphone)?

孤街浪徒 提交于 2019-12-02 19:37:46
How can i transfer data between two device? I would like to transfer data (mostly image file) between different platforms (android,iphone). Is it possible to use p2p or should i use client-server? Any help will be appreciated. While p2p is possible in some cases, you will achieve the most widespread compatibility with a client-server architecture, at the cost of having to deploy, power, connect, and maintain servers. You will be able to use both wifi access points and mobile (3g, etc) networks You have a ready place in the system to measure (or restrict) usage and/or insert ads You don't have

How do I explain performance variability over PCIe bus?

痴心易碎 提交于 2019-12-02 12:16:09
问题 On my CUDA program I see large variability between different runs (upto 50%) in communication time which include host to device and device to host data transfer times over PCI Express for pinned memory. How can I explain this variability? Does it happen when the PCI controller and memory controller is busy performing other PCIe transfers? Any insight/reference is greatly appreciated. The GPU is Tesla K20c, the host is AMD Opteron 6168 with 12 cores running the Linux operating system. The PCI

How do I explain performance variability over PCIe bus?

筅森魡賤 提交于 2019-12-02 06:39:18
On my CUDA program I see large variability between different runs (upto 50%) in communication time which include host to device and device to host data transfer times over PCI Express for pinned memory. How can I explain this variability? Does it happen when the PCI controller and memory controller is busy performing other PCIe transfers? Any insight/reference is greatly appreciated. The GPU is Tesla K20c, the host is AMD Opteron 6168 with 12 cores running the Linux operating system. The PCI Express version is 2.0. talonmies The system you are doing this on is a NUMA system, which means that

Lowest Latency small size data Internet transfer protocol? c#

只愿长相守 提交于 2019-12-02 05:47:10
问题 I am doing a Internet Gaming project which involving keeping sending small size of data (between 1K to 50K) over the Internet between two normal home PCs. The key I care about is the latency. I understand TCP, UDP are the popular ones. TCP is reliable but slower than UDP while UDP is not safe and I have to implement my own fault-handling codes. I am just wondering are there any other protocols I can follow to send/receive small data between two normal home PCs? by the term of normal home PCs,

How to only dispatch FileList from dataTransfer after File items are loaded

…衆ロ難τιáo~ 提交于 2019-12-02 02:55:20
问题 I'm using a Node package module called react-dropzone and React-Redux to allow users to drag a file onto the window and display the file info. The react-dropzone component is giving me the FileList from the standard event.dataTransfer.files. The problem I'm having is that when I dispatch that FileList to the Redux store, the File items aren't yet loaded in the FileList array, so when I dispatch the File data, I just get {"preview":"blob:file:///f30eafb8-8a77-4402-9111-379590b4a03f"} . If I

How to only dispatch FileList from dataTransfer after File items are loaded

ぃ、小莉子 提交于 2019-12-01 23:21:49
I'm using a Node package module called react-dropzone and React-Redux to allow users to drag a file onto the window and display the file info. The react-dropzone component is giving me the FileList from the standard event.dataTransfer.files . The problem I'm having is that when I dispatch that FileList to the Redux store, the File items aren't yet loaded in the FileList array, so when I dispatch the File data, I just get {"preview":"blob:file:///f30eafb8-8a77-4402-9111-379590b4a03f"} . If I log the File items to the console, they show up just fine because their data is loaded by the time I

Reading and writing global variables across scripts in PHP

你离开我真会死。 提交于 2019-12-01 18:48:56
Does PHP have global variables that can be modified by one running script and read by another? No, by design PHP is a "share nothing" architecture, which means nothing is shared between processes running at the same time or between requests running one after another. There are ways to share data, but you have to do it explicitly. If you just want to share between 2 requests from the same user, sessions or cookies might be the way to go. If you want to share between multiple users, you probably want some sort of shared persistence, either short term in a cache (eg. memcached) or more robust

dataTransfer is null when creating drag event programmatically

筅森魡賤 提交于 2019-12-01 04:03:03
I am trying to create a dragEvent and fire it programmatically using this code on Chrome: var ev = document.createEvent("MouseEvents"); ev.initEvent("dragstart"); and then fire it this way: element.dispatchEvent(ev); The element has draggable attribute. The event was dispatched successfully. However on the event being fired - the dataTransfer object is null. Even when I try to set it manually to a working dataTransfer object - it still stays null. Any ideas? Thanks Olga Gnatenko Unfortunately, it seems that there is no such a way to create a DataTransfer object programmatically at the moment.

Serial Port (RS232) communication with Visual C++ 2010

吃可爱长大的小学妹 提交于 2019-12-01 01:45:55
I have to write a program in Visual C++ 2010 to communicate via Serial Port (RS232) in Windows 7 32 bit. Can Someone help me to find correct example? Serial Communications: http://msdn.microsoft.com/en-us/library/ff802693.aspx This article still remains actual after so many years... Code sample included. Here it is a two samples of the same program, one for visual studio 2013 and the other for minGW in Eclipse in Windows 7 32 bits for visual studio: stadfx.h #pragma once #include "targetver.h" #include <stdio.h> #include <tchar.h> // TODO: mencionar aquí los encabezados adicionales que el