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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 ...
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...
Which equals operator (== vs ===) should be used in JavaScript comparisons?
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The strict equality operator (===) behaves identically to the abstract equality operator (==) except no type conversion is done, and the types must be the same to be considered equal.
Reference: Javascript Tutorial: Comparison Operators
The == operator will compare for equ...
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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What causes imported Maven project in Eclipse to use Java 1.5 instead of Java 1.6 by default and how
... I have 1.6 configured as my Eclipse default Preferences->Java->Installed JREs .
12 Answers
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How to use ScrollView in Android?
...een is not an issue; the parent layout simply needs to be arranged so they all have room on the screen. As for one ScrollView inside another, that's difficult. Instead, the Android compatibility library has NestedScrollView. There are lots of tutorials on the web for how to use NestedScrollView for ...
List comprehension on a nested list?
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This seems to be the one explanation that's actually hitting home with me, thank you!
– Douglas Plumley
Mar 20 at 2:33
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How do I upload a file with metadata using a REST web service?
...at I wanted to do. Unfortunately, due to a weird business rule, we have to allow the upload to occur in any order (metadata first or file first). I was wondering if there was a way to combine the two in order to save the headache of dealing with both situations.
– Daniel T.
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