worker-pool | Go simple async worker pool | Reactive Programming library
kandi X-RAY | worker-pool Summary
kandi X-RAY | worker-pool Summary
[license] . Go simple async worker pool.
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- Delegate pushes args to the queue
- buildQueueValue converts the arguments into reflect . Value
- isValidHandler returns an error if the function is not a function .
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worker-pool Examples and Code Snippets
Community Discussions
Trending Discussions on worker-pool
QUESTION
Attempting to run the word count example on minikube following the Flink Kubernetes instructions here, but the job never completes. The Python Beam SDK worker pooler doesn't appear to do any work.
In addition to the instructions for configuring a Flink Kubernetes cluster, I added a Python SDK worker pool to the taskmanager deployment. If I understand correctly, the purpose of the worker pool is to execute the Python portions of the pipeline. See full k8s deployment.
...ANSWER
Answered 2020-Sep-28 at 23:16By default (as of this writing), Beam stages runtime dependencies ("artifacts") to a certain directory (/tmp/staged by default) that needs to be accessible to both the job server (in your case, the client) and the Beam worker.
You can get around this by setting the --flink_submit_uber_jar pipeline option. When --flink_submit_uber_jar is set, Beam wraps all your dependencies in a jar that is submitted to Flink.
QUESTION
I have a project in which I am converting a large amount of .tif images into PDF documents. File count goes into millions.
To speed up the process I am using Amphp. Since the process of converting the images with Imagemagick takes up some cpu power I want to limit the maximum amount of parallel running converter processes.
My first approach works, but could be improved if I queue the files instead of giving a set amount of workers an array of x files.
This is my current code, where I tried to replicate the example.
...ANSWER
Answered 2020-Sep-23 at 12:09After some more experimenting I found a solution, that seems to work. It feels a bit "hacky", so if anyone has a better idea, please share. I thought the pool would automatically build up a queue which is then handled by the maximum amount of workers, that seems to not be the case.
I now save the coroutines that I get from the Amp\call in two separate arrays. One which holds all coroutines and one that holds all for the current loop.
QUESTION
I want to have the limited number of goroutines that make some computation (func worker(), it makes some computation and places the result in a channel). Also a have another channel, that has "jobs" for my workers. As a result I can see that all jobs were computed correctly, but after computation executions stucks.
...ANSWER
Answered 2020-Sep-11 at 13:49Your program doesn't return because it waits the closed status of results channel.
In https://gobyexample.com/worker-pools the loop for getting results is different:
QUESTION
I have a model with some calculations associated with a number of hubs, each with a unique hub code. Hence I configure the batch run as a list of hub codes. However, there could be some errors happens for certain hubs. In such case, the batch run will be auto stopped at the time error happens.
I am wondering if I could configure to tell the batch run to auto jump the hubs that are reporting errors and continue to calculate the remaining hubs to finish the entire batch run list of hubs.
Update on issue clarification:
I have a batch run configuration consists of two key parameters. The hub name and the date. "Hub name" is a list of all hub codes. I have 300 hubs to simulate. The "date" indicates the demand data of a particular date for a hub. I have set the date range from 1 to 5. Thereafter, I have 300 x 5 combination of scenarios to simulate, which forms the batch run configuration.
The batch run, however is likely to be interrupted as some part of the input data is missing for simulating certain hub scenarios (e.g. some hub does not have full 5 days demand data, when the model pulls the input data of a particular date which is missing, the model reports runtime error causing the whole batch run ended). Hence, in reality there is not full 300 X 5 viable scenarios, some are missing or invalid.
I want the batch run to jump simulating the scenarios if there are some errors and continue to simulate the rest of the valid scenarios. e.g. if I have hub-1, hub-2, hub-3, hub-4, hub-5 as the batch scenarios. if these 5 scenarios are happen to be allocated to the same cpu core, I hope it will finish whatever it can finish. i.e. if hub-3 reportes an error, batch run will jump it and continue to simulate hub-4 and hub-5 scenarios. so finally I can still get hub-1,2,4,5 results except hub-3 being error reportred and hence empty result.
Update: the traceback info: (it seems try catch exception (RunEnvironment.getInstance().endRun();) won't work in initialization (context builder)
INFO [AWT-EventQueue-0] 14:11:03,592 repast.simphony.batch.gui.BatchConfigMediator - Writing batch run config file to: C:\Users\xxx\Desktop\Repast\Hub_Unload\output\config.props INFO [AWT-EventQueue-0] 14:11:03,692 repast.simphony.batch.gui.BatchConfigMediator - Unrolling batch parameter file: C:\Users\xxx\Desktop\Repast\Hub_Unload\batch\batch_params.xml to C:\Users\xxx\AppData\Local\Temp\unrolledParamFile.txt INFO [SwingWorker-pool-2-thread-1] 14:11:13,463 repast.simphony.batch.ssh.LocalSession - Copying locally C:\Users\xxx\AppData\Local\Temp\Jie_localhost7191822269942717344.zip to C:\Users\xxx\AppData\Local\Temp\simphony_model_1595484669853 ... INFO [SwingWorker-pool-2-thread-1] 14:11:13,492 repast.simphony.batch.ssh.LocalSession - Copying Finished. INFO [SwingWorker-pool-2-thread-1] 14:11:13,494 repast.simphony.batch.ssh.SessionsDriver - Initialization Time: 0.0606 INFO [SwingWorker-pool-2-thread-1] 14:11:13,494 repast.simphony.batch.ssh.LocalSession - Unzipping model C:\Users\xxx\AppData\Local\Temp\simphony_model_1595484669853\Jie_localhost7191822269942717344.zip INFO [SwingWorker-pool-2-thread-1] 14:11:13,955 repast.simphony.batch.ssh.LocalSession - Running model on localhost ... INFO [Thread-0] 14:11:21,769 repast.simphony.batch.ssh.LocalSession - WARNING: An illegal reflective access operation has occurred INFO [Thread-0] 14:11:21,769 repast.simphony.batch.ssh.LocalSession - WARNING: Illegal reflective access by com.thoughtworks.xstream.core.util.Fields (file:/C:/Users/xxx/AppData/Local/Temp/simphony_model_1595484669853/lib/xstream-1.4.7.jar) to field java.util.TreeMap.comparator INFO [Thread-0] 14:11:21,769 repast.simphony.batch.ssh.LocalSession - WARNING: Please consider reporting this to the maintainers of com.thoughtworks.xstream.core.util.Fields INFO [Thread-0] 14:11:21,770 repast.simphony.batch.ssh.LocalSession - WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations INFO [Thread-0] 14:11:21,770 repast.simphony.batch.ssh.LocalSession - WARNING: All illegal access operations will be denied in a future release INFO [Thread-0] 14:11:21,806 repast.simphony.batch.ssh.LocalSession - INFO [Thread-0] 14:11:21,807 repast.simphony.batch.ssh.LocalSession - Hub Code: 769WX INFO [Thread-0] 14:11:21,807 repast.simphony.batch.ssh.LocalSession - Date: 2 INFO [Thread-0] 14:11:21,807 repast.simphony.batch.ssh.LocalSession - INFO [Thread-0] 14:11:21,807 repast.simphony.batch.ssh.LocalSession - Header a.require_id,a.line_code,a.send_zone_code,a.arrive_zone_code,a.line_level,a.arr_date,a.arr_time,sim_date,sim_date_adj,arr_time_adj,shift,shift_start,shift_last_arr,shift_end,a.car_type,sum_qty,sum_t77,sum_und3_qty,sum_und3bag_qty,sum_lt_qty,sum_hv_qty INFO [Thread-0] 14:11:21,810 repast.simphony.batch.ssh.LocalSession - Header ��ת������,ж���ڱ���,���߱��,ж������,ж��������ж����,���ػ�ж���ٶȣ���/Сʱ��,�ػ�ж���ٶȣ���/Сʱ��,�����������(��/Сʱ) INFO [Thread-0] 14:11:21,817 repast.simphony.batch.ssh.LocalSession - Dock INFO [Thread-0] 14:11:21,866 repast.simphony.batch.ssh.LocalSession - WARN [main] 14:11:21,864 repast.simphony.query.AbstractPropertyQuery - Possible error while creating property query INFO [Thread-0] 14:11:21,866 repast.simphony.batch.ssh.LocalSession - java.lang.IllegalArgumentException: Property 'arr_tm' not found. INFO [Thread-0] 14:11:21,867 repast.simphony.batch.ssh.LocalSession - at repast.simphony.query.AbstractPropertyQuery.propertyNotFound(AbstractPropertyQuery.java:88) INFO [Thread-0] 14:11:21,867 repast.simphony.batch.ssh.LocalSession - at repast.simphony.query.PropertyLessThanEquals.createPredicate(PropertyLessThanEquals.java:94) INFO [Thread-0] 14:11:21,867 repast.simphony.batch.ssh.LocalSession - at repast.simphony.query.AbstractPropertyQuery.query(AbstractPropertyQuery.java:83) INFO [Thread-0] 14:11:21,867 repast.simphony.batch.ssh.LocalSession - at hub_Unload.Initialization_Builder.build(Initialization_Builder.java:274) INFO [Thread-0] 14:11:21,867 repast.simphony.batch.ssh.LocalSession - at repast.simphony.dataLoader.engine.ClassNameContextBuilder.build(ClassNameContextBuilder.java:41) INFO [Thread-0] 14:11:21,867 repast.simphony.batch.ssh.LocalSession - at repast.simphony.dataLoader.engine.DataLoaderControllerAction.runInitialize(DataLoaderControllerAction.java:48) INFO [Thread-0] 14:11:21,867 repast.simphony.batch.ssh.LocalSession - at repast.simphony.engine.controller.DefaultController$2.visit(DefaultController.java:214) INFO [Thread-0] 14:11:21,867 repast.simphony.batch.ssh.LocalSession - at repast.simphony.engine.controller.DefaultController$2.visit(DefaultController.java:1) INFO [Thread-0] 14:11:21,867 repast.simphony.batch.ssh.LocalSession - at repast.simphony.util.collections.NaryTree.preOrderTraverals(NaryTree.java:292) INFO [Thread-0] 14:11:21,867 repast.simphony.batch.ssh.LocalSession - at repast.simphony.util.collections.NaryTree.preOrderTraverals(NaryTree.java:295) INFO [Thread-0] 14:11:21,867 repast.simphony.batch.ssh.LocalSession - at repast.simphony.util.collections.NaryTree.preOrderTraverals(NaryTree.java:295) INFO [Thread-0] 14:11:21,868 repast.simphony.batch.ssh.LocalSession - at repast.simphony.util.collections.NaryTree.preOrderTraversal(NaryTree.java:288) INFO [Thread-0] 14:11:21,868 repast.simphony.batch.ssh.LocalSession - at repast.simphony.engine.controller.DefaultController.runInitialize(DefaultController.java:212) INFO [Thread-0] 14:11:21,868 repast.simphony.batch.ssh.LocalSession - at repast.simphony.engine.controller.DefaultController.runInitialize(DefaultController.java:383) INFO [Thread-0] 14:11:21,868 repast.simphony.batch.ssh.LocalSession - at repast.simphony.batch.OneRunBatchRunner.run(OneRunBatchRunner.java:101) INFO [Thread-0] 14:11:21,868 repast.simphony.batch.ssh.LocalSession - at repast.simphony.batch.InstanceRunner.run(InstanceRunner.java:195) INFO [Thread-0] 14:11:21,868 repast.simphony.batch.ssh.LocalSession - at repast.simphony.batch.InstanceRunner.main(InstanceRunner.java:217) INFO [Thread-0] 14:11:21,871 repast.simphony.batch.ssh.LocalSession - ERROR [main] 14:11:21,869 repast.simphony.batch.InstanceRunner - Error while running model INFO [Thread-0] 14:11:21,871 repast.simphony.batch.ssh.LocalSession - java.lang.IndexOutOfBoundsException: Index -1 out of bounds for length 0 INFO [Thread-0] 14:11:21,871 repast.simphony.batch.ssh.LocalSession - at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64) INFO [Thread-0] 14:11:21,871 repast.simphony.batch.ssh.LocalSession - at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70) INFO [Thread-0] 14:11:21,871 repast.simphony.batch.ssh.LocalSession - at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248) INFO [Thread-0] 14:11:21,871 repast.simphony.batch.ssh.LocalSession - at java.base/java.util.Objects.checkIndex(Objects.java:372) INFO [Thread-0] 14:11:21,871 repast.simphony.batch.ssh.LocalSession - at java.base/java.util.ArrayList.get(ArrayList.java:458) INFO [Thread-0] 14:11:21,871 repast.simphony.batch.ssh.LocalSession - at hub_Unload.Initialization_Builder.build(Initialization_Builder.java:308) INFO [Thread-0] 14:11:21,871 repast.simphony.batch.ssh.LocalSession - at repast.simphony.dataLoader.engine.ClassNameContextBuilder.build(ClassNameContextBuilder.java:41) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.dataLoader.engine.DataLoaderControllerAction.runInitialize(DataLoaderControllerAction.java:48) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.engine.controller.DefaultController$2.visit(DefaultController.java:214) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.engine.controller.DefaultController$2.visit(DefaultController.java:1) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.util.collections.NaryTree.preOrderTraverals(NaryTree.java:292) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.util.collections.NaryTree.preOrderTraverals(NaryTree.java:295) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.util.collections.NaryTree.preOrderTraverals(NaryTree.java:295) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.util.collections.NaryTree.preOrderTraversal(NaryTree.java:288) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.engine.controller.DefaultController.runInitialize(DefaultController.java:212) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.engine.controller.DefaultController.runInitialize(DefaultController.java:383) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.batch.OneRunBatchRunner.run(OneRunBatchRunner.java:101) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.batch.InstanceRunner.run(InstanceRunner.java:195) INFO [Thread-0] 14:11:21,872 repast.simphony.batch.ssh.LocalSession - at repast.simphony.batch.InstanceRunner.main(InstanceRunner.java:217)
...ANSWER
Answered 2020-Jul-22 at 12:46If you catch the exception and call RunEnvironment.getInstance().endRun() that may be enough to exit gracefully. You may end up with empty output though.
If this happens during initialization, you can catch the error and schedule the run to end at some very small number before any model behavior occurs.
QUESTION
I am trying to create a kubernetes cluster with terraform but it shows me an error, I changed the value of the version on different occasions but it did not work.
...ANSWER
Answered 2020-Jul-04 at 15:23Use below command to grab the latest and valid version slug and use it in version
QUESTION
I'm trying to create a simple JMS ActiveMQ connection in WildFly 19, using IntelliJ. I've followed setup guidelines, but I'm hitting a connection error.
I'm running Wildfly as a local server, in standalone mode. I've updated the Startup Script environment variables in IntelliJ, to point to standalone-full.xml (apparently I need to use standalone-full.xml, in order to use JMS?)
ANSWER
Answered 2020-Jun-06 at 14:47I believe the issue is your activation configuration. You've defined the destination property twice:
QUESTION
I have written following program. Basically I am using executor framework to manage threads. I've also used a BlockingQueue and deliberately keeping it empty so that the thread remains in waiting state.
The below is the program:
...ANSWER
Answered 2020-May-22 at 10:19When you start a new Thread, it will execute its run method on a completely new call stack. That is the entrypoint for the code in that Thread. It is completely decoupled from the thread that called start. The "parent" thread continues to run its own code on its own stack independently, and if either of the two threads crashes or completes it does not impact the other.
The only thing that shows up in a thread's stack frames is whatever gets called inside of run. You don't get to see who called run (the JVM did that). Unless of course, you confused start with run and called the run directly from your own code. Then there is no new thread involved at all.
Here, the thread is not created by your own code directly, but by the executor service. But that one does not do anything different, it also has to create threads by calling constructors and start them using start. The end result is the same.
What run usually does is delegate to a Runnable that has been set in its constructor. You see that here: The executor service has installed a ThreadPoolExecutor$Worker instance. This one contains all the code to be run on the new thread and control its interactions with the executor.
That ThreadPoolExecutor$Worker in turn will then call into its payload code, your application code, the tasks that have been submitted to the executor. In your case, that is com.example.cs.executors.CSExecutorUnderstanding$$Lambda$2/1705736037.
QUESTION
I'm attempting to conduct a batch run of a model through the Simphony GUI. I have text sink with relative path "./Test_Data_FileSink" created in my scenario tree. This file is created and saved with single runs through the GUI. However, when I conduct a batch run, no file is created within the localhost instance. When I navigate to the instance, I see a debug.log, FAILURE_null, instance.log, and param_input.txt, but no Test_Data_FileSink file. The batch process attempts to compile the data across instances and returns an empty batch_param_map.txt and Test_Data_FileSink.txt within the designated output location.
Warning message is displayed through Batch Run Configuration Window below:
'WARN [SwingWorker-pool-2-thread-1] 12:15:28,906 repast.simphony.batch.ssh.OutputFinder - No model output found matching glob:{**\,}Test_Data_FileSink_ModelOutput*.txt in C:\Users\user\AppData\Local\Temp\simphony_model_1582046063159\instance_1'
There is an additional error in the batch run console log where the model might be looking for the UI.
repast.simphony.batch.InstanceRunner - Error while running model java.lang.NoClassDefFoundError: repast/simphony/ui/RSApplication
The GUI UI does allow for parameter input, but I can't see where the model depends on it to run if the parameters are already set. I've attempted to insert some conditional statements around setting the UI
...ANSWER
Answered 2020-Feb-20 at 17:18The SpecialEffects class in the GeoZombies model references the RSApplication class which isn't available in the batch classpath, and it's not needed in batch anyway since all it does is provide some visual and sound effects, it can be removed from the model.
- Delete the SpecialEffects class
- In ContextCreator delete the static call to SpecialEffects.setUIEffects();
- In Human agent, delete the call to SpecialEffects.getInstance().playEnragedZombies();
- In Zombie agent, delete calls to SpecialEffects.getInstance()...
QUESTION
This is a theory question,
I previously thought that in nodejs expensive tasks like I/O, Network,... will be executed on a worker in worker pool, not the main node event loop, so it doesn't block the event loop.
I read some articles about it, e.g nodejs docs
But today i read an article that wrote:
"As async is definitely a better solution for such cases, it's the sync versions of the methods that have proper -Sync suffix. You should keep in mind that the use of sync methods is just highly not-recommended and, when used, will block the main thread from performing any other operations. Just use them with care (and only if you really have to)!"
So if it's true, why these synchronous tasks will block the main even loop when it should be execute on the worker pool?
Thanks
...ANSWER
Answered 2019-Oct-27 at 05:36So if it's true, why these synchronous tasks will block the main even loop when it should be execute on the worker pool?
Because the sync versions are specifically designed to block the main thread so it will WAIT for them to complete before returning. They are designed to be blocking APIs. That's what they're designed to do. If they didn't do that, they'd be non-blocking and asynchronous, not blocking and synchronous.
The issue isn't what thread the actual work gets done on. The issue is that the sync versions are specifically designed to make the main thread wait until they are done. This is to simplify programming in certain situations where a blocking behavior is desired. For example, it's not uncommon to use some synchronous file I/O in the startup code for a server. For example, require() does blocking file I/O to load scripts.
But, as you've seen in the article, you only want to use asynchronous file I/O once your server is up and running and handling requests.
QUESTION
I have a SwingWorker background thread that contains the following code to perform a request and parse the response:
...ANSWER
Answered 2019-Oct-22 at 17:57It does not block. Note that there is no doInBackground method in the whole thread dump, and SwingWorker thread pool is idle.
More likely, the code throws an uncaught exception or error - presumably, NoClassDefFoundError. Some dependencies must be missing in the classpath when you launch the application as -jar.
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