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Task not serializable: java.io.NotSerializableException when calling function outside closure only o
...terface, 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 dataset (RDD), which can be viewed as a distributed...
How to read the value of a private field from a different class in Java?
... = (Hashtable) f.get(obj); //IllegalAccessException
EDIT: as has been commented by aperkins, both accessing the field, setting it as accessible and retrieving the value can throw Exceptions, although the only checked exceptions you need to be mindful of are commented above.
The NoSuchFieldExcepti...
How to write asynchronous functions for Node.js
...s functions should be written. After a lot of plowing through a lot of documentation, it's still unclear to me.
6 Answers
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Naming convention for Scala constants?
...r Scala constants? A brief search on StackOverflow suggestions uppercase CamelCase (the first line below), but I wanted to double-check.
...
Are email addresses case sensitive?
... part of e-mail is case sensitive, however I've tried to send e-mail to name@example.com , Name@example.com and NAME@example.com - it has arrived in each case.
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Why should a function have only one exit-point? [closed]
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There are different schools of thought, and it largely comes down to personal preference.
One is that it is less confusing if there is only a single exit point - you have a single path through the method and you know where to look for the exit. On the minus side if you use indenta...
Should __init__() call the parent class's __init__()?
...o optional whether to use the super identifier, or whether to explicitly name the super class:
object.__init__(self)
In case of object, calling the super method is not strictly necessary, since the super method is empty. Same for __del__.
On the other hand, for __new__, you should indeed call th...
Android DialogFragment vs Dialog
Google recommends that we use DialogFragment instead of a simple Dialog by using Fragments API , but it is absurd to use an isolated DialogFragment for a simple Yes-No confirmation message box. What is the best practice in this case?
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What is the overhead of creating a new HttpClient per call in a WebAPI client?
What should be the HttpClient lifetime of a WebAPI client?
Is it better to have one instance of the HttpClient for multiple calls?
...
how to split the ng-repeat data with three columns using bootstrap
...ld look in a $watch, so that the data is always available in the original, merged format:
$scope.$watch('chunkedData', function(val) {
$scope.data = [].concat.apply([], val);
}, true); // deep watch
Many people prefer to accomplish this in the view with a filter. This is possible, but should on...