broadcast

I am wondering if there is a limit size of a broadcast variable in spark because I need to broadcast a large object (6GB and can be larger in the future). I have searched in the home page and this site but nothing was found to answer my question. Would I ever have problems with broadcasting a very large object? There is a limit of Java Integer.MAX_VALUE. That is to say about 2,3 GB. Please have a look here in Spark Jira for more information: https://issues.apache.org/jira/browse/SPARK-5739 来源： https://stackoverflow.com/questions/32021419/is-there-any-limit-on-size-of-a-spark-broadcast-variable

I want to know the difference between services and broadcast receivers, can anyone point out an example that can be observed on android mobile devices. Thanks Vins Service: If you want to do something in background , this will be running always in background even if the application closed. You can create this in separate process and also you can give your service to other app if you want. Downloading any content or Music is good example Broadcast Reciever: Usually system will send some info which can be recieved by your app if you would wish to ,by registering. And you can do something what

I need to send a broadcast datagram to all machine (servers) connected to my network. I'm using NodeJS Multicast Client var dgram = require('dgram'); var message = new Buffer("Some bytes"); var client = dgram.createSocket("udp4"); client.send(message, 0, message.length, 41234, "localhost"); // If I'm in the same machine 'localhost' works // I need to do something 192.168.0.255 or 255.255.255 client.close(); Servers var dgram = require("dgram"); var server = dgram.createSocket("udp4"); server.on("message", function (msg, rinfo) { console.log("server got: " + msg + " from " + rinfo.address + ":"

I have a program that uses content from sd-card. I want to listen to different states like sd-card mounted or sd-card removed unexpectedly. How can I do so. An example would be of a great help. Thanks to all PravinCG You need to listen for ACTION_MEDIA_REMOVED and ACTION_MEDIA_MOUNTED . Create a receiver and listen for this action. EDIT: In your manifest file add this <receiver android:name=".MyReceiver" > <intent-filter> <action android:name="android.intent.action.MEDIA_REMOVED" /> <action android:name="android.intent.action.MEDIA_MOUNTED" /> <data android:scheme="file" /> </intent-filter> <

I have an application that is at the same time a broadcast sender and receiver of standard action android.intent.action.SET_WALLPAPER. I want to do some stuff only in a case when another application broadcasted this intent. Is there any way to determine who initiated a broadcast in onReceive method of a BroadcastReceiver? No. If you only want to do something when an action was broadcast by another app (i.e. not yours), I imagine it should be easy to determine that your app didn't send this broadcast, and therefore it was someone else.. If all you care about is if it was sent by your app or not