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Name node is in safe mode. Not able to leave
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In order to forcefully let the namenode leave safemode, following command should be executed:
bin/hadoop dfsadmin -safemode leave
You are getting Unknown command error for your command as -safemode isn't a sub-command for ha...
How to change the name of a Django app?
...y -- no problems with the existing historical migrations. Do the steps in order, and propagate the changes everywhere before moving to the following step.
– user85461
Sep 30 '19 at 18:11
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Store print_r result into a variable as a string or text
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ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Any gotchas using unicode_literals in Python 2.6?
We've already gotten our code base running under Python 2.6. In order to prepare for Python 3.0, we've started adding:
6 A...
Why use def main()? [duplicate]
...to add.
Reasons to have that if statement calling main() (in no particular order):
Other languages (like C and Java) have a main() function that is called when the program is executed. Using this if, we can make Python behave like them, which feels more familiar for many people.
Code will be clean...
Simple calculations for working with lat/lon and km distance?
...long coordinates are expressed in degrees, while the cos function in most (all?) languages typically accepts radians, therefore a degree to radians conversion is needed.
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How to find a text inside SQL Server procedures / triggers?
...ON m.object_id=o.object_id
WHERE m.definition Like '%'+@Search+'%'
ORDER BY 2,1
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jQuery UI: Datepicker set year range dropdown to 100 years
...own by default shows only 10 years. The user has to click the last year in order to get more years added.
6 Answers
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What are Scala context and view bounds?
... view bounds in the standard library (before Scala 2.8.0, anyway), is with Ordered, like this:
def f[A <% Ordered[A]](a: A, b: A) = if (a < b) a else b
Because one can convert A into an Ordered[A], and because Ordered[A] defines the method <(other: A): Boolean, I can use the expression a...