mandy | Easy Map/Reduce with Hadoop and Ruby | Runtime Evironment library
kandi X-RAY | mandy Summary
kandi X-RAY | mandy Summary
Mandy hides the differences and complexities between running map/reduce tasks locally or distributed or in test environments. It provides a simple DSL to define new jobs for distribution. See examples/word_count.rb for a demo of some functionality. Run the word count example locally with…. Mandy more examples can be found at We are very light on documentation at the moment we are aware of the problem and are working hard to rectify it. Mandy is licensed under the MIT Licence, please see LICENCE for further information.
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Top functions reviewed by kandi - BETA
- Retrieve a row
- Open a Scan .
- Set a value for a table key
- Iterate over each item in the given block
- Get a list of column names
- Registers a store
- Compile a reduce task
- compile map
- Increments a counter .
- Executes the given input map .
mandy Key Features
mandy Examples and Code Snippets
Community Discussions
Trending Discussions on mandy
QUESTION
I'm using spring boot and thymeleaf. Managing to call a spring controller method on click of first submit button. I'm trying for a Ajax call on hit of second submit button , how can I achieve it?
Ajax call for the second submit button
...ANSWER
Answered 2021-Jun-09 at 03:35Why do you need two submit buttons? Which one actually completes the form?
Adding the following code to your JS would immediately solve the issue, but ultimately you really should change one of those submit inputs to type="button" as well. This will prevent the default functionality of the form element and you can then override it with your own code:
QUESTION
I have the following master table
...ANSWER
Answered 2021-Jun-02 at 07:50Access certainly does support subqueries, but you're using a crossjoin, so you will never get a null there.
Instead, left join and perform a subquery in the FROM clause.
Your query would fail identically in Oracle, by the way. There are no relevant differences between Access and Oracle here.
QUESTION
First time working with JSON and trying to figure this one out. I am able to connect to the API and get the JSON string to display in my textbox. I am confused on how to properly display the data correctly in the textbox.
This my code I have.
...ANSWER
Answered 2021-Jan-29 at 17:14I write a very simple console application, in this app, it gets your provided sample JSON and deserializes it to a class. so you can iterate items (elements) and display them.
QUESTION
I have the following report in SSRS:
...ANSWER
Answered 2021-Jan-26 at 16:14In the Design part of your SSRS package, right click on Revenue cell and go to Text Box properties:
In the expression editor :
QUESTION
Lets suppose i have this table:
...ANSWER
Answered 2021-Jan-24 at 19:37@Abelisto had the correct idea and a solution could be:
QUESTION
All names below are randomly generated / fictitious.
I have the following Excel Reference Sheet:
...ANSWER
Answered 2021-Jan-02 at 20:23Assuming all 3 data is located in column A-C, with table1 in Sheet1, table2 in Sheet2 and table 3 in sheet3.. with the 1st data (0001) is located at cell A2..
in Sheet3 A2, put :
QUESTION
I have a query that select data from a table.
This table records number vary based on users input.
When the number of records is around 60,000 or less it is pretty fast ( less than 2 minutes).
But when I double number of records around 120,000 it takes more than an hour! and THEN I have to kill the process.
I don't know why it is extremely slow.
I added many indexes but its still too slow.
Here is the query
...ANSWER
Answered 2020-Dec-25 at 15:38You have a Key lookup with 37K lookups Try to delete index "[NonClusteredIndex-20201223-150141]" and create another one instead:
QUESTION
My original table
STUDENTS
...ANSWER
Answered 2020-Nov-22 at 14:29You can use ROW_NUMBER() window function along with the following ORDER BY clause
QUESTION
I have to compile the nstat code in https://github.com/shemminger/iproute2/blob/main/misc/nstat.c but I think it cannot compile without ELF support and I checked the internet for ways that I can install them, but they're very confusing.
It would be so great if you could help me out.
for more context here's me trying to make the file:
...ANSWER
Answered 2020-Oct-24 at 00:37The problem is this:
QUESTION
The code below asks you 4 yes/no questions, but you're only supposed to say yes to one of them. They go in the order as it shows below, but I want this to stop asking the questions as soon as the user says yes.
Example: You answer "yes" to the first question "Do you want to listen to hip-hop? (yes/no)" then it shouldn't ask the other 3 questions. If you say no to the first two questions and yes to the third it should not ask the fourth.
Are there any commands that I don't know? I tried using "else" instead of "elif" for the last command, but that didn't do what I wanted. Thanks!
...ANSWER
Answered 2020-Oct-20 at 00:00After each request for input you can simply have an if statement:
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Install mandy
On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.
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