Assignor | Assignor 数据流架构组件化 -

 by   luiing Kotlin Version: 1.0.0 License: Apache-2.0

kandi X-RAY | Assignor Summary

kandi X-RAY | Assignor Summary

Assignor is a Kotlin library. Assignor has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.


            kandi-support Support

              Assignor has a low active ecosystem.
              It has 8 star(s) with 1 fork(s). There are 1 watchers for this library.
              There were 3 major release(s) in the last 12 months.
              Assignor has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of Assignor is 1.0.0

            kandi-Quality Quality

              Assignor has no bugs reported.

            kandi-Security Security

              Assignor has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              Assignor 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

              Assignor releases are not available. You will need to build from source code and install.

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            Assignor Key Features

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            Assignor Examples and Code Snippets

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            Community Discussions


            What does lexicografic Order of Consumers in Kafka exactly mean?
            Asked 2021-Jun-04 at 12:42

            The question seems to be very easy, but I haven't found an explanation on it. The default partition assignement strategy in kafka is with the RangeAssignor. How this assignor is working is explained as:

            "The range assignor works on a per-topic basis. For each topic, we lay out the available partitions in numeric order and the consumers in lexicographic order. We then divide the number of partitions by the total number of consumers to determine the number of partitions to assign to each consumer. If it does not evenly divide, then the first few consumers will have one extra partition."

            How it works is clear so far. Unclear is on what attribute the lexicographic order is done. Is done by the id of a Consumer? Can anybody give an example for a lexicografic order of consumers?





            Answered 2021-Jun-04 at 12:42

            Since consumer client id is not required and group id should only be used for offset management, I assume it means by topic name, when the consumer is subscribed to multiple topics. If you are only using one topic, then only partitions are numerically ordered



            Complex Rails Models/Associations
            Asked 2021-May-29 at 10:12

            I'm building an assigning system for referees.

            Issue I asked this question previously/slightly different but have run into trouble again. I have 5 models essentially that need to be linked together and I can't find a resource online to specify/guide me to the solution for more than 3 tables to be joined. I think I have it nailed down for the meantime and I can pull what I need to in the console but it just seems all over the place.

            Models in plain English:

            1. League - Devise user who can log in and upload a schedule(create games) through a form
            2. Assignor - Devise user who then takes that schedule and assigns referees to the games
            3. Referee - Devise user who gets assigned to games
            4. Game - created by League (contains teams,venue, referee crew assigned)
            5. Assignment - created when League creates a game

            My models/associations are:



            Answered 2021-May-29 at 10:12

            A possible solution would be to allow the user to create multiple assignments per game, then he could assign multiple referees, each with a different role.

            To reflect the role / type of the referee, you could add another column to the assignment table which holds the information about the assignment type (center, assistant, ...)

            If you really want to have just one assignment per game which holds the references to 4 referees, you could do:



            Kafka custom partition - consumers assignor with custom per partition user data
            Asked 2021-Mar-07 at 17:47

            I am implementing a custom consumers to topics/partitions assignor in Kafka. To this end, I am overriding the AbstractPartitionAssignor abstract class which in turn implements the ConsumerPartitionAssignor interface.

            As part of the custom assignor, I want to send a single (float) information about each partition of each topic that the consumers subscribe to.

            I am aware that I can send custom data to the assignor by overriding the default method ByteBuffer subscriptionUserData(Set topics) of the ConsumerPartitionAssignor interface.

            However, the issue is that from the method signature above I can not get the list of partitions assigned to the underlined consumer for each of the topics that the consumer registers for.

            On the other hand, I can see that the subscription class sent by each of the consumers to the group coordinator has a list of the owned partitions per consumer.



            Answered 2021-Mar-07 at 17:47

            To solve the above issue, just use the Assignor callback function onAssignment as shown below



            Create Spring Cloud Data Flow Processor using Gradle and Kotlin
            Asked 2021-Jan-20 at 08:19

            I'm trying to build a Kotlin Processor based on Spring Cloud Stream 3.1 using Kotlin Lambda. I'm deploying this processor into a stream using Spring Cloud Data Flow but it is marked as failed.

            If I cat the error log I have the following error : IllegalArgumentException: Type must be one of Supplier, Function or Consumer



            Answered 2021-Jan-17 at 03:33

            Please compare your sample with the Kotlin example that we have in the Microsite.

            Perhaps even repeat the example as-is and get it working in your environment to get comfortable with it also. You should be able to use your app in the same manner after the fact.



            Client rebalacing when leader election takes place
            Asked 2020-Oct-20 at 08:19

            I have a custom kafka setup, where my application and a kafka broker are placed in a single node.
            To make sure that the app instance only consumes the partitions in that node(to reduce network overhead), I have a custom partition assignor assigned to all members of the group.

            However, if a broker fails and then it rejoins the cluster, will that trigger a consumer re-balance ? Similarly, if I add a new broker and trigger the partition re-assignment script, would that also trigger a re-balance ?



            Answered 2020-Oct-20 at 08:19

            Typically, a consumer rebalancing will happen when :

            • A consumer joins or leaves the Consumer Group.
            • A consumer fails to send an heartbeat request to the Broker Coordinator before reaching a timeout (see and managing the group.
            • A consumer does not invoke the poll() method frequently enough (see
            • A consumer subscription has changed.
            • Metadata for a topic matching the subscription has changed (i.e: the number of partitions has been increased).
            • A new topic matching the subscription has been created (when using pattern).
            • A topic matching the subscrption has been deleted (when using pattern).
            • When a rebalancing is manually triggered using the using Java Consumer API (see Consumer#enforceRebalance()).
            • When the broker acting as coordinator of the group fails.

            So, to answer your question adding a new broker will not trigger a partition-reassignment.

            Here is blog post explaining how the rebalance protocol works Apache Kafka Rebalance Protocol, or the magic behind your streams applications.



            Best method to import Nested JSON data into Dataframes or Dictionary?
            Asked 2020-Jul-12 at 23:58

            I am wondering if anyone would have a suggestion on how to import nested JSON data in as a Dataframe or dictionary? The data in question is normally available here -

            Here is an example of the format of the data:



            Answered 2020-Jul-12 at 23:58

            The command you're looking for is json_normalize. The Pandas documentation for it is pretty good-

            So for example, you would want to do something like:



            Flutter/dart accessing listdata within another list
            Asked 2020-Jun-21 at 18:58

            I have a JSON response from RestApi like this:



            Answered 2020-Jun-21 at 18:58

            You need to somehow also iterate through each comment inside each list item. One way (probably only for a small amount of remarks), would be a Column (or if you need scrolling you could use a SingleChildScrollView with a Column). Example:



            yii2 mongodb - add comments to existing field how to
            Asked 2020-Apr-28 at 20:33

            I have a collection called work-monitor where-in I have two fields namely assignor_remarks and assignee_remarks.

            so when a comment is submitted by either assignor or assignee, I want to add those comments in the respective comment filed. I am able to save the comments in the collection, but new comments is overriding the existing one.

            my code is like this:



            Answered 2020-Apr-28 at 20:33

            Try something like that, if I have understood you correctly.



            Sarama Kafka consumergroup function return
            Asked 2020-Apr-15 at 09:28

            I am very new to Go Lang and attempting to make some adjustments to an open source library that consumes messages from Kafka using the Sarama library. The original code can be found here.

            The original package implements a PartitionConsumer that works just fine if one doesn't need read consistency across multiple consumers consuming the same topic, however, that does not work for me.

            I have done some work within the same application to implement the sarama NewConsumerGroup package using some examples I have found online.

            Below is the code I currently have running:



            Answered 2019-Dec-27 at 13:40

            Here is the solution to my problem. I had goroutines blocking the main function(s) and they needed to be broken out. If the code below doesn't make any sense, here is a link to the program I was modifying: If I can get a response from the owner I plan on cleaning up the code and submitting a pull request, or possibly publishing a fork.



            AngularJS / Material - Re-display ng-message when user clears text input
            Asked 2020-Jan-13 at 03:34

            When I load my page (template below) ng-message shows on all text inputs and textareas, then disappears per input when I star typing.

            When delete all characters or leave only spaces (which I trim) I want to see my ng-message again but it is gone.

            How do I re-display the ng-message on inputs that have no text just like they appear underneath each input element when loading the page for the first time?




            Answered 2019-Apr-26 at 22:47

            Use of negation (!) of .length inside my ng-if instead of == '' fixed the issue.


            I replaced


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