azkaban | batch job scheduler can be seen as a combination | Job Scheduling library
kandi X-RAY | azkaban Summary
kandi X-RAY | azkaban Summary
A batch job scheduler can be seen as a combination of the unix utilities cron and make. Batch jobs need to be scheduled to run periodically. They also typically have intricate dependencies chains—for example dependencies on various data extraction processes or previous steps. Larger processes may have 50 or 60 steps, some of which may run in parallel and others of which must wait for one another. Combining all these processes into a single program will allow you to control the dependency management but lead to sprawling monolithic programs which are difficult to test or maintain. Simply scheduling the individual pieces to run at different times avoids the monolithic problem, but introduces many timing assumptions that are inevitably broken. Azkaban is a "workflow" scheduler that allows the pieces to be declaratively assembled into a single workflow and for that workflow to be scheduled to be run periodically. A good batch workflow system allows a program to be built out of small reusable pieces that need not know about one another. By declaring dependencies you can control sequencing. Other functionality available from Azkaban can then be layered on top of the job--email notifications of success or failure, resource locking, retry on failure, log collection, historical job runtime information, and so on.
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Top functions reviewed by kandi - BETA
- Run Azkaban command
- Loads the job descriptors from the given directory
- Creates a classloader for the given directory
- Loads all properties from a directory
- Reorders the index in the given level
- Display a flow
- Converts a flow to JSON
- Executes the job
- Call callbacks
- Reorder the nodes
- Gets the log
- Sets up the node layout
- Displays a sequence file
- Run Azkaban
- Get a record writer
- Displays an uncompressed text file
- Construct an individual flow
- Displays an avro file
- Configure the velocity engine
- Returns a view of the job
- Runs the job
- Starts the job
- Handle a GET flow
- Applies the given ExecutableFlow to the JobGraph
- Generate a map of jobs from a given execution flow
- Restart all flows
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azkaban Examples and Code Snippets
Community Discussions
Trending Discussions on azkaban
QUESTION
I'm trying to follow a graphql tutorial, even thoughg I followed it and double checked I keep getting the above error and I have no idea why
dont you really hate when the bot asks you to type more, its mostly code for a reason I dont have a clue and I posted all my code!!!
...ANSWER
Answered 2021-May-22 at 08:03Wrong capitilisation GraphQlObjectType should be GraphQLObjectType
QUESTION
I'm trying to create a dependent dropdown in dash/plotly, based on the unique values from the column depending on what is selected in the first dropdown. I created a chained callback and visually, the graph is updating correctly and the dropdowns are populating correctly. However, I receive an KeyError for one of my fields (Category, which has nothing to do with the dropdowns, it simply colors the categories), after a fair amount of tinkering I still can't figure out what's causing it. Here's my layout, callbacks and the error I'm getting in the debug environment:
ANSWER
Answered 2021-Apr-16 at 01:20So I have a workaround, I'm sure there is a better solution but this is working as expected. I believe the graph update_graph function is being triggered after the game dropdown is updated, but before the options are updated, resulting in the filter on wrcombo_ producing a blank table. After the 2nd callback, the error was fixing itself as the platform is updated and the table can filter correctly. Introducing a check if the table is empty allows me to decide whether or not to refresh the graph, as below:
QUESTION
I'm going through a tutorial and I can't understand why my query is not working.
I have 2 tables :
authors
books
The task was to write a query that would print an author's name and the number of books they have authored.
My solution was this one:
...ANSWER
Answered 2021-Feb-26 at 23:27First, you should write your query with qualified column references so it is easier to follow:
QUESTION
I'm trying to center a card element when it is clicked, to highlight it and separate if from the other cards, using CSS transforms. I know CSS transform is relative to the element's location, but I have to use transform and not top/left to avoid repositioning of the other cards. I've tried to calculate the correct offset using JavaScript, like so:
...ANSWER
Answered 2021-Feb-22 at 23:15Some of your other CSS styles for .selected-movie were throwing off the un-selected cards' styles when the clicked movie is selected, so I've temporarily commented out those styles. Regardless, I believe this should answer the question you're asking about the using those offsets in the CSS.
This is a great opportunity to use CSS variables, which you can set on pageload and window resize using JavaScript. From there, everything else can be done in CSS.
See below:
QUESTION
I'm trying to create a random movie generator. I've already created a generator that displays a new movie after a button is clicked. But I want to create a table that will display more information about each movie that is generated, that is, the director, genre, year etc. I want this information to be generated into a table each time and the correct data to be under the correct heading in the table.
Example of how the data would look
HTML so far:
...ANSWER
Answered 2020-Dec-31 at 02:33It looks like you are 90% of the way there already.
All you need to do is replace your paragraph with a table that's organized how you want, then you need to update multiple table cells every time you click the button instead of just updating the one paragraph.
How you update the table cells depends on how the data is stored.
For example, if you had all the titles in one array and all the directors in another array and the years in a third array, you'd have to update one cell with titlesArray[randomNumber] and another cell with directorsArray[randomNumber] and another with yearsArray[randomNumber] — and you'd have to make sure the movies were in order in each array and nothing was missing anywhere.
However, if at all possible, the easier solution is to store each movie's data as an object. This is a perfect use case.
Your array of strings would simply become an array of objects. You would get a new random number for the index of the array, then you'd reference the properties of the object at that index for the particulars of that movie.
Simple example here that you can build on:
QUESTION
I have a text file containing a list of names and a list of books in this form:
...ANSWER
Answered 2020-Dec-07 at 21:16You want your for loops to go from 0 to < the count or else from 1 to the count as in:
QUESTION
I have a reading list in a database. I use this as a base for personal training It has grown in functionality over time, so please forgive the odd structure.
I'm trying to add paging to this query but I'm having an issue trying to add the ROW_NUMBER method because of how I implemented "Ord" in my query.
I was able to get this working utilizing cascading Common Table Expressions but feel there must be a better way.
Here is what the output should do when displaying all books by an author:
- Display completed books from oldest completed to newest
- Then display the currently defined reading list controlled by the "Status" column
- Then display any other books by that author not already listed
Setup
...ANSWER
Answered 2020-Oct-22 at 17:01then how about offset fetch :
QUESTION
I have a page with many images, here is an example:
...ANSWER
Answered 2020-Oct-20 at 01:11Check out this site on how to create tooltips using only HTML/CSS
Here's a snippet from the site:
QUESTION
how can I set up HTTP Request Sampler for HTTP PUT method in JMeter so it can read data from CSV file using CSV Data Set Config?
In my scenario I'm using Concurrency Thread Group with the following parameters:
- Target Concurrency: 50
- RampUp Time (secs): 10
- RampUp Steps count: 5
- Hold Target..(secs): 10
This is my CSV Data Set Config setup:
(Java) Types of Variable Names are: bookId:Long, title:String, price:double, amount:int, authors: Set , categories: Set , isDeleted:boolean
This is my HTTP Request Sampler setup:
...and this is content of my bookCollection10Items.csv file where quoted values are Strings, and the ones in angle brackets [] are arrays
of values (as I'm updating Book that has Many-To-Many relationship with Categories/Authors):
1,"Harry Potter and Magic Stone",39.99,2500,[4],7,11,false
2,"Murder on the Orient Express",[19.98,500500],1,9,false
3,"The Murder of Roger Ackroyd",19.99,1500,1,[7,9],false
4,"Harry Potter and the Chamber of Secrets",24.99,0,4,[7,9],true
5,"Harry Potter and the Prisoner of Azkaban",17.99,1200,4,7,false
6,"The Da Vinci Code",29.99,700,8,10,false
7,"Inferno",22.50,950,8,10,false
11,"War and Peace",31.99,300,5,8,false
14,"The Trial",27.99,450,6,9,false
15,"IT",16.50,0,2,5,true
What I want to achieve is that each Thread(i.e. User) to select one item from "bookCollection10Items.csv" file in a round-robin fashion and update it for a given bookId using "All Threads" as Sharing Mode option.
Any advice/suggestion is greatly appreciated.
ANSWER
Answered 2020-Aug-18 at 15:53JMeter's built-in CSV Data Set Config is reading lines from the CSV file sequentially so each user will get the next line on each iteration.
If you need to read a random line (however I don't think it's a good idea as I believe tests need to be repeatable) you will need to go for some plugins like:
Both can be installed using JMeter Plugins Manager
QUESTION
I want it to show all of the JK Rowling Harry Potter series books but for some reason it only show the first one. How do I fix this? It seems there is a bug in the select statement but i cant seem to find out what it is. Can some one help? I am just gonna type random words in quotations because stackoverflow says the my post is mostly code and i need to add more details.
...ANSWER
Answered 2020-Aug-13 at 22:41There is only 1 join for author_id = 2, and it's on series_id = "2-1":
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You can use azkaban like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the azkaban component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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