filewriter

I am writing a Scala code that requires me to write to a file in HDFS. When I use Filewriter.write on local, it works. The same thing does not work on HDFS. Upon checking, I found that there are the following options to write in Apache Spark- RDD.saveAsTextFile and DataFrame.write.format . My question is: what if I just want to write an int or string to a file in Apache Spark? Follow up: I need to write to an output file a header, DataFrame contents and then append some string. Does sc.parallelize(Seq(<String>)) help? create RDD with your data (int/string) using Seq : see parallelized

I'm trying to write TIFF IFDs, and I'm looking for a simple way to do the following (this code obviously is wrong but it gets the idea across of what I want): out.writeChar(12) (bytes 0-1) out.writeChar(259) (bytes 2-3) out.writeChar(3) (bytes 4-5) out.writeInt(1) (bytes 6-9) out.writeInt(1) (bytes 10-13) Would write: 0c00 0301 0300 0100 0000 0100 0000 I know how to get the writing method to take up the correct number of bytes (writeInt, writeChar, etc) but I don't know how to get it to write in little endian. Anyone know? Maybe you should try something like this: ByteBuffer buffer =

I have a problem in my PhoneGap app. I would like to write a file of 15 MB. If I try the OS pulls more and more memory and the app crashes without message. I can reproduce this on android and blackberry tablets. Is there a way to implement the writing more efficient? best regards fe.createWriter( (fw: any) => { fw.onwriteend = (e) => { fw.onwriteend = (e) => { callback(); } fw.write(data); } // write BOM (dead for now) fw.write(""); }, (error: any) => { alert("FileWriter Failed: " + error.code); }); It's TypeScript, I hope JS developers won't struggle with this ;) I found the answer. Crash

From this string we get from DataURL, what's the best way to download this as a file? So far what I got was using a basic window.open("myDataURL"); , but I'm not able to change the file name in this way. window.open('data:application/msword;base64,0M8R4KGxGuEAAAAAAAAAAAAAAAAAAAAA PgADAP7/CQAGAAAAAAAAAAAAAAACAAAANQAAAAAAA AAAEAAANwAAAAIAAAD+////AAAAADQAAABsAA/', '_blank','height=300,width=400'); I was wondering if there's any way to handle this data properly. you can add a download attribute to the anchor element. sample: <a download="abcd.zip" href="data:application/stream;base64,MIIDhTCCAvKg.

I have this snippet of code: try { f1 = new File("sink.txt"); f1.createNewFile(); fw = new FileWriter(f1); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } ... code ... System.out.println(sequence); System.out.println(mySink.indexOf(sequence)); String result = ""; int firstIndex = mySink.indexOf(sequence); if (firstIndex >= 0) { System.out.println(true); int secondIndex = mySink.indexOf(sequence, firstIndex + sequence.length()); if (secondIndex >= 0) { System.out.println(true); result = mySink.substring(firstIndex, secondIndex + sequence

I am trying to use PrintWriter.java but I am getting a rather strange problem and I am not able to figure out what am I am missing here. MyPrintWriter.java public class MyPrintWriter { public static void main(String[] args) { File myFile = new File("myFileDirectory/myFileName.txt"); try { FileWriter fw = new FileWriter(myFile); PrintWriter pw = new PrintWriter(fw); pw.println("Hello World!"); pw.close(); } catch (FileNotFoundException e) { System.err.println("File not found: " + myFile); } catch (Exception e) { e.printStackTrace(); } } } MyFileWriter.java public class MyFileWriter { public