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Task not serializable: java.io.NotSerializableException when calling function outside closure only o
...ng 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 collection. Basically, RDD's elemen...
Remote JMX connection
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Had it been on Linux the problem would be that localhost is the loopback interface, you need to application to bind to your network interface.
You can use the netstat to confirm that it is not bound to the expected network inte...
Is an index needed for a primary key in SQLite?
When an integer column is marked as a primary key in an SQLite table, should an index be explicitly created for it as well? SQLite does not appear to automatically create an index for a primary key column, but perhaps it indexes it anyway, given its purpose? (I will be searching on that column all t...
Should URL be case sensitive?
...ese may not be easy. Users should always consider that
URLs are case-sensitive.
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How to overcome “datetime.datetime not JSON serializable”?
...ngine (per comments) and pymongo is a dependency, pymongo has built-in utilities to help with json serialization:
http://api.mongodb.org/python/1.10.1/api/bson/json_util.html
Example usage (serialization):
from bson import json_util
import json
json.dumps(anObject, default=json_util.default)
Ex...
How do I create a PDO parameterized query with a LIKE statement?
Here's my attempt at it:
7 Answers
7
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Javascript: best Singleton pattern [duplicate]
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edited Jan 3 '19 at 5:52
answered Jul 18 '11 at 13:49
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Is “Java Concurrency In Practice” still valid? [closed]
...as, concepts and implementation described in the book are still compliant with the latest Java versions.
9 Answers
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Difference between shadowing and overriding in C#?
...
Well inheritance...
suppose you have this classes:
class A {
public int Foo(){ return 5;}
public virtual int Bar(){return 5;}
}
class B : A{
public new int Foo() { return 1;} //shadow
public override int Bar() {return...
Add a “hook” to all AJAX requests on a page
I'd like to know if it's possible to "hook" into every single AJAX request (either as it's about to get sent, or on events) and perform an action. At this point I'm assuming that there are other third-party scripts on the page. Some of these might use jQuery, while others do not. Is this possible?
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