azkaban | batch job scheduler can be seen as a combination | Job Scheduling library

 by   jkreps Java Version: Current License: Apache-2.0

kandi X-RAY | azkaban Summary

kandi X-RAY | azkaban Summary

azkaban is a Java library typically used in Data Processing, Job Scheduling applications. azkaban has no bugs, it has a Permissive License and it has high support. However azkaban has 1 vulnerabilities and it build file is not available. You can download it from GitHub.

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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            kandi-support Support

              azkaban has a highly active ecosystem.
              It has 22 star(s) with 77 fork(s). There are 4 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              azkaban has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of azkaban is current.

            kandi-Quality Quality

              azkaban has 0 bugs and 0 code smells.

            kandi-Security Security

              OutlinedDot
              azkaban has 1 vulnerability issues reported (1 critical, 0 high, 0 medium, 0 low).
              azkaban code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              azkaban is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              azkaban releases are not available. You will need to build from source code and install.
              azkaban has no build file. You will be need to create the build yourself to build the component from source.

            Top functions reviewed by kandi - BETA

            kandi has reviewed azkaban and discovered the below as its top functions. This is intended to give you an instant insight into azkaban implemented functionality, and help decide if they suit your requirements.
            • 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
            Get all kandi verified functions for this library.

            azkaban Key Features

            No Key Features are available at this moment for azkaban.

            azkaban Examples and Code Snippets

            No Code Snippets are available at this moment for azkaban.

            Community Discussions

            QUESTION

            GraphQLObjectType is not a constructor
            Asked 2021-May-22 at 08:03

            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 08:03

            Wrong capitilisation GraphQlObjectType should be GraphQLObjectType

            Source https://stackoverflow.com/questions/67646935

            QUESTION

            KeyError on chained callback for dependent dropdowns in plotly-dash [Python]
            Asked 2021-Apr-16 at 01:20

            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 01:20

            So 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:

            Source https://stackoverflow.com/questions/67084059

            QUESTION

            Why does group by statement do not return correct rows?
            Asked 2021-Mar-10 at 14:06

            I'm going through a tutorial and I can't understand why my query is not working.

            I have 2 tables :

            authors

            id name 1 JK Rowling 2 Stephen King 3 Agatha Christie 4 Dr Seuss

            books

            id title author_id 1 Chamber of Secrets 1 2 Prizoner of Azkaban 1 3 The Dark Tower 2 4 Murder at the Links 3 5 Affait at Styles 3 6 Cat in the hat 4

            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 23:27

            First, you should write your query with qualified column references so it is easier to follow:

            Source https://stackoverflow.com/questions/66393987

            QUESTION

            Center element on window using transform
            Asked 2021-Feb-23 at 09:26

            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 23:15

            Some 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:

            Source https://stackoverflow.com/questions/66324280

            QUESTION

            How do I create a table that can be filled with data from a data set randomly?
            Asked 2020-Dec-31 at 02:33

            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 02:33

            It 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:

            Source https://stackoverflow.com/questions/65514793

            QUESTION

            JAVA - Difficulty scanning in a TXT file containign a mix of different information
            Asked 2020-Dec-07 at 21:33

            I have a text file containing a list of names and a list of books in this form:

            ...

            ANSWER

            Answered 2020-Dec-07 at 21:16

            You want your for loops to go from 0 to < the count or else from 1 to the count as in:

            Source https://stackoverflow.com/questions/65189488

            QUESTION

            Is it possible to remove cascading CTEs in this query when trying to add ROW_NUMBER
            Asked 2020-Oct-22 at 17:01

            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:

            1. Display completed books from oldest completed to newest
            2. Then display the currently defined reading list controlled by the "Status" column
            3. Then display any other books by that author not already listed

            Setup

            ...

            ANSWER

            Answered 2020-Oct-22 at 17:01

            then how about offset fetch :

            Source https://stackoverflow.com/questions/64486188

            QUESTION

            Is there any way to use img alt as tooltip?
            Asked 2020-Oct-20 at 03:21

            I have a page with many images, here is an example:

            ...

            ANSWER

            Answered 2020-Oct-20 at 01:11

            Check out this site on how to create tooltips using only HTML/CSS

            Here's a snippet from the site:

            Source https://stackoverflow.com/questions/64437082

            QUESTION

            How to perform HTTP PUT Request by reading values from CSV in JMeter?
            Asked 2020-Aug-19 at 14:29

            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 15:53

            JMeter'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:

            1. Random CSV Data Set Config
            2. or HTTP Simple Table Server

            Both can be installed using JMeter Plugins Manager

            Source https://stackoverflow.com/questions/63466733

            QUESTION

            Why is my code only showing one JK Rowling book? It should be working?
            Asked 2020-Aug-13 at 22:42

            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 22:41

            There is only 1 join for author_id = 2, and it's on series_id = "2-1":

            Source https://stackoverflow.com/questions/63404044

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            Azkaban through 3.84.0 allows XXE, related to validator/XmlValidatorManager.java and user/XmlUserManager.java.

            Install azkaban

            You can download it from GitHub.
            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 .

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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