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What is the purpose of shuffling and sorting phase in the reducer in Map Reduce Programming?
...tribute them to the reduce tasks, but you can override it and use your own custom Partitioner.
A great source of information for these steps is this Yahoo tutorial.
A nice graphical representation of this is the following (shuffle is called "copy" in this figure):
Note that shuffling and sortin...
Symbolic link to a hook in git
I wrote my own custom post-merge hook, now I added a "hooks" directory to my main project folder (since git doesn't track changes in .git/hooks), somewhere I read that I can make a symbolic link from hooks to .git/hooks so I don't have to copy the file from one folder to the other every time someone...
How to check task status in Celery?
...
You can also create custom states and update it's value duting task execution.
This example is from docs:
@app.task(bind=True)
def upload_files(self, filenames):
for i, file in enumerate(filenames):
if not self.request.called_direct...
Bash Templating: How to build configuration files from templates with Bash?
...m writing a script to automate creating configuration files for Apache and PHP for my own webserver. I don't want to use any GUIs like CPanel or ISPConfig.
...
LESS CSS nesting classes
...
LESS is still awesome, especially the PHP LESS preprocessor, with its modified, more flexible syntax. But until there's some sort of commonly accepted syntax, such problems will arise from time to time. In my view, this one is LESS' only drawback.
...
Is MonoTouch now banned on the iPhone? [closed]
... is one thing to stop Adobe who haven't launched their product and have no customers and to stop MonoTouch who do and also have approved product in the AppStore.
Why would anyone want to build a business and invest in Apple when they will take it all away at a moments notice without being answerabl...
Code coverage with Mocha
...ll see a table like this in your console, just after your tests output:
Customization
Html report
Just use
nyc --reporter=html
instead of text. Now it will produce a report inside ./coverage/index.html.
Report formats
Istanbul supports a wide range of report formats. Just look at its repor...
How to check if a string contains a substring in Bash
... @bukzor Quotes stopped working here as of Bash 3.2+: tiswww.case.edu/php/chet/bash/FAQ E14). It's probably best to assign to a variable (using quotes), then compare. Like this: re="My s"; if [[ $string =~ $re ]]
– seanf
May 12 '15 at 0:55
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PostgreSQL: Modify OWNER on all tables simultaneously in PostgreSQL
...
This: http://archives.postgresql.org/pgsql-bugs/2007-10/msg00234.php is also a nice and fast solution, and works for multiple schemas in one database:
Tables
SELECT 'ALTER TABLE '|| schemaname || '.' || tablename ||' OWNER TO my_new_owner;'
FROM pg_tables WHERE NOT schemaname IN ('pg_cat...
Bootstrap 3 and Youtube in Modal
...;
</html>
visit (link broken): https://parrot-tutorial.com/run_code.php?snippet=bs4_modal_youtube
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