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How does Hadoop process records split across block boundaries?
...mapper already knows if it neds to discard the first line or not.
So basically if you have 2 lines of each 100Mb in the same file, and to simplify let's say the split size is 64Mb. Then when the input splits are calculated, we will have the following scenario:
Split 1 containing the path and the ...
For i = 0, why is (i += i++) equal to 0?
...d
i + 1; // Note that you are discarding the calculation result
What actually happens is more involved than that - take a look at MSDN, 7.5.9 Postfix increment and decrement operators:
The run-time processing of a postfix increment or decrement operation of the form x++ or x-- consists of the ...
How do I increase the number of displayed lines of a Java stack trace dump?
...stack trace will be shortened. If you for some reason want the full trace, all you need to do is take the last line before the ... in Foo's stack trace and look for it in the Bar's stack trace; everything below that line is exactly what would have been printed in Foo's stack trace.
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How to invoke a Linux shell command from Java
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Thank you. This worked. Actually I used "sh" instead of "csh".
– Farshid
Jun 2 '12 at 11:12
5
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How can I create a correlation matrix in R?
...es/…, or a simple matrix, but with the R-squared instead of pearson, kendall, or spearman correlation?
– FraNut
Jan 22 '15 at 12:13
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What is the JavaScript >>> operator and how do you use it?
...ck way to round a number and ensure it is in the 32-bit int range. Additionally, the triple >>> operator, after doing its unsigned operation, converts the results of its calculation to Number as an unsigned integer rather than the signed integer the others do, so it can be used to convert n...
What's the best way to share data between activities?
...nContext();
String data = app.getData();
Static fields
The idea is basically the same as the singleton, but in this case you provide static access to the data:
public class DataHolder {
private static String data;
public static String getData() {return data;}
public static void setData(Str...
Scrollview vertical and horizontal in android
I'm really tired looking for a solution for vertical and horizontal Scrollview.
11 Answers
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What is a “first chance exception”?
...ception? How and where does it originate in a .NET program? And why is it called by that peculiar name (what 'chance' are we talking about)?
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Why use softmax as opposed to standard normalization?
...harper image? This is simply a matter of scaling and both cases are essentially the same. If anything, this should seem to support standard normalization, which correctly considers the two cases equivalent.
– user118967
Jun 5 '19 at 5:07
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