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hadoop No FileSystem for scheme: file
...s remains (the last one that was added). In this case, the FileSystem list from hadoop-commons overwrites the list from hadoop-hdfs, so DistributedFileSystem was no longer declared.
How we fixed it
After loading the Hadoop configuration, but just before doing anything FileSystem-related, we call t...
Python dictionary: Get list of values for list of keys
...t, mykeys)
Alternatively, using operator.itemgetter can return a tuple:
from operator import itemgetter
myvalues = itemgetter(*mykeys)(mydict)
# use `list(...)` if list is required
Note: in Python3, map returns an iterator rather than a list. Use list(map(...)) for a list.
...
'sudo gem install' or 'gem install' and gem locations
...g results. My gem path is set to my home folder and only contains the gems from ' gem list --local '.
7 Answers
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Cross-Domain Cookies
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Yes, it is absolutely possible to get the cookie from domain1.com by domain2.com. I had the same problem for a social plugin of my social network, and after a day of research I found the solution.
First, on the server side you need to have the following headers:
header("A...
What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
...s does not require that wchar_t be large enough to represent any character from all locales simultaneously. That is, the encoding used for wchar_t may differ between locales. Which means that you cannot necessarily convert a string to wchar_t using one locale and then convert back to char using anot...
What is a serialVersionUID and why should I use it?
...d it preserves the abiity of the serialVersionUID mechanism to protect you from incompatible changes.
– Tom Anderson
Apr 24 '11 at 10:43
25
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How can I play sound in Java?
...tream in = new FileInputStream(Filename);
// Create an AudioStream object from the input stream.
AudioStream as = new AudioStream(in);
// Use the static class member "player" from class AudioPlayer to play
// clip.
AudioPlayer.player.start(as);
// Similarly, to stop the audio...
CSS 100% height with padding/margin
...: calc(100% - 10px); height: calc(100% - 10px); padding: 5px; } 5 from left and 5 from right = 10, 5 from top and 5 from bottom = 10
– Chris P
Mar 15 '19 at 9:10
add ...
Converting JSON data to Java object
I want to be able to access properties from a JSON string within my Java action method. The string is available by simply saying myJsonString = object.getJson() . Below is an example of what the string can look like:
...
Is there a concurrent List in Java's JDK?
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Because the act of acquiring the position and getting the element from the given position naturally requires some locking (you can't have the list have structural changes between those two operations).
The very idea of a concurrent collection is that each operation on its own is atomic and...