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How to turn off INFO logging in Spark?
...jetty=WARN
log4j.logger.org.eclipse.jetty.util.component.AbstractLifeCycle=ERROR
log4j.logger.org.apache.spark.repl.SparkIMain$exprTyper=INFO
log4j.logger.org.apache.spark.repl.SparkILoop$SparkILoopInterpreter=INFO
Replace at the first line:
log4j.rootCategory=INFO, console
by:
log4j.rootCateg...
How to quit a java app from within the program
...gram know that everything went OK. If, however, you are quitting due to an error, you should System.exit(1);, or with another non-zero number corresponding to the specific error.
Also, as others have mentioned, clean up first! That involves closing files and other open resources.
...
How do I use reflection to call a generic method?
...s, change their types or rename method name then you'll get a compile-time error. This won't happen if you provide the method name as a string in Type.GetMethod and arguments as the objects array in MethodInfo.Invoke.
Below is a simple example that illustrates how some errors can be caught at compi...
New self vs. new static
...ic $name = static::class;
}
$Foo = new Foo;
echo $Foo->name; // Fatal error
Using self::
class Foo {
public $name = self::class;
}
$Foo = new Foo;
echo $Foo->name; // Foo
Please note that the Fatal error comment in the code i made doesn't indicate where the error happened, the...
How to generate random SHA1 hash to use as ID in node.js?
..."random".
var id = crypto.randomBytes(20).toString('hex');
//=> f26d60305dae929ef8640a75e70dd78ab809cfe9
The resulting string will be twice as long as the random bytes you generate; each byte encoded to hex is 2 characters. 20 bytes will be 40 characters of hex.
Using 20 bytes, we have 256^20...
Windows 8.1 / Windows 10 breaks my ASP.NET / IIS : “Service unavailable”
...S and it should all work again.
Edit: 8/30/16 : A similar but unrelated error can occur if you have the 'new' .NET core installed and update to Win 10 Anniversary edition. See here: https://github.com/aspnet/Home/issues/1583 - Running a repair on VS 2015 Tooling Preview should fix it. Wanted to a...
Using Pylint with Django
... for
my python projects, but I have run into one show-stopper: One of the
error types that I find extremely useful--: E1101: *%s %r has no %r
member* --constantly reports errors when using common django fields,
for example:
...
The cast to value type 'Int32' failed because the materialized value is null
I have the following code. I'm getting error:
8 Answers
8
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Make git automatically remove trailing whitespace before committing
... for git to automatically remove trailing whitespace (and other whitespace errors) from all commits as they are applied.
16...
When should you use constexpr capability in C++11?
...t its not obliged to. constexpr obliges the compiler and will spit out an error if it can't.
– Goz
Jan 20 '11 at 14:38
...