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Task not serializable: java.io.NotSerializableException when calling function outside closure only o
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RDDs extend the Serialisable interface, so this is not what's causing your task to fail. Now this doesn't mean that you can serialise an RDD with Spark and avoid NotSerializableException
Spark is a distributed computing engine and its main abstraction is a resilient distributed ...
How to generate a random int in C?
... @trusktr for a simple linear congruential generator (which is what rand() usually is) seeding with rand() would at best have no effect at all, and at worst would break the generator's known qualities. This is a deep subject. Start with reading Knuth Vol 2 Chapter 3 on random numbers as ...
Bubble Sort Homework
... nitpick for a little script like this; it's more to get you accustomed to what Python code most often resembles.
def bubble(bad_list):
To swap the values of two variables, write them as a tuple assignment. The right hand side gets evaluated as a tuple (say, (badList[i+1], badList[i]) is (3, 5)) a...
Scala how can I count the number of occurrences in a list
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A somewhat cleaner version of one of the other answers is:
val s = Seq("apple", "oranges", "apple", "banana", "apple", "oranges", "oranges")
s.groupBy(identity).mapValues(_.size)
giving a Map with a count for each item in the o...
clear javascript console in Google Chrome
...sole.info as "presenter notes" (following Christian's advice), and this is what I came up with, just in case I won't remember to assign window.alert: var hasClear = (typeof clear == 'function'); if(hasClear) clear(); console.info('bla'); if(!hasClear) console.log(Array(18).join('\n'));
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How do you tell if a string contains another string in POSIX sh?
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What about using wildcards? [[ $haystack == *"My needle"* ]]
– Pablo Bianchi
Oct 5 '17 at 21:02
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What is the difference between t.belongs_to and t.references in rails?
What is the difference between t.references and t.belongs_to ?
Why are we having those two different words? It seems to me they do the same thing?
Tried some Google search, but find no explanation.
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In Vim is there a way to delete without putting text in the register?
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You can also yank something with yy or '3yy' (or whatever), which puts it in the unnamed register, but also in 0. You can then keep pasting it with "0p, despite having used d after that.
– Halfgaar
Aug 7 '15 at 12:31
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emacs/elisp: What is the hash (pound, number sign, octothorp) symbol used for?
What does this do?
3 Answers
3
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Setting a property by reflection with a string value
...Namespace. I find it useful to scan that namespace every year or so to see what features I've missed. Give it a try!
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