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How does Hadoop process records split across block boundaries?
...n. A record may span two Mappers.
The way HDFS has been set up, it breaks down very large files into large blocks (for example, measuring 128MB), and stores three copies of these blocks on different nodes in the cluster.
HDFS has no awareness of the content of these files. A record may have been ...
For i = 0, why is (i += i++) equal to 0?
...tract syntax tree. Conceptually, the expression's tree is walked from top down, but the evaluation unfolds as the recursion pops back up the tree from the bottom.
// source code
i += i++;
// abstract syntax tree
+=
/ \
i ++ (post)
\
i
Evaluation begins by cons...
What happens when a computer program runs?
... variables, return addresses, return values, etc.
| | often grows downward, commonly accessed via "push" and "pop" (but can be
| | accessed randomly, as well; disassemble a program to see)
+---------+
| shared | mapped shared libraries (C libraries, math libs, etc.)
| libs |
+...
Why should I use an IDE? [closed]
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Then again, I can press Ctrl+P, giving me a dropdown list of a whole bunch of commands that vim thinks I can use.
– new123456
Jul 5 '11 at 17:16
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ios Upload Image and Text using HTTP POST
...yrajm.g. for me its working. may be your webservice problem why u r giving down vote give me upvote?
– mahesh chowdary
Sep 1 '14 at 4:10
add a comment
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Are tuples more efficient than lists in Python?
...stant sequence of values in your code (eg for direction in 'up', 'right', 'down', 'left':), tuples are preferred, since such tuples are pre-calculated in compile time.
Read-access speeds should be the same (they are both stored as contiguous arrays in the memory).
But, alist.append(item) is much pre...
Import an existing git project into GitLab?
...nds run locally on my computer:
To illustrate my example, I will be using https://github.com/raveren/kint as the source repository that I want to import into gitlab. I created an empty project named Kint (under namespace raveren) in gitlab beforehand and it told me the http git url of the newly cre...
Differences between Emacs and Vim
...no previous experience with it! I had to use google to be able to close it down, and still had to try several times to get it right.
– HelloGoodbye
Jun 30 '15 at 21:39
10
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How do you use https / SSL on localhost?
... property pages, then start options and assign the start URL - put the new https with the new port (usually 44301 - notice the similarity to port 443) and your project will start correctly from then on.
share
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Split string into an array in Bash
...the risk of blowing up if this assumption were ever violated at some point down the line. Once again, consider my counterexample of 'Los Angeles, United States, North America' (or 'Los Angeles:United States:North America').
Also, word splitting is normally followed by filename expansion (aka pathna...