2,334 questions
3
votes
0
answers
58
views
ExecutorService - cancel pending tasks
There are multiple questions about waiting for an Java ExecutorService to finish (shutdown() + awaitTermination()) or alternatively cancel them all (shutdownNow()).
I'd like to go for an early exit ...
- 9,334
0
votes
0
answers
38
views
Why Threadpool queue the task instead of reusing the idle threads
Creation of ThreadPool
@PostConstruct
public void postConstruct() {
threadPool = new ThreadPoolExecutor(corePoolSize != 0 ? corePoolSize : defaultPoolSize, maxPoolSize != 0 ? maxPoolSize : ...
- 946
0
votes
1
answer
31
views
Can the threads handling api requests and used in multithreading inside the request belong to same thread pool, in springboot?
I have built a SpringBoot application with REST APIs, One of these multithreaded APIs is implemented using executor service.
ExecutorService service = Executors.newFixedThreadPool(threadPoolSize)...
0
votes
0
answers
48
views
An approach to avoid OOM issue for parallel tasks
I have written a program which basically reads a file, processes its records to extract some data using a third party library and then dispatches the data to a remote server.
To speed up the process, ...
- 7,412
0
votes
0
answers
54
views
How do I handle and prevent race conditions in a multi-threaded Java application using ExecutorService? [duplicate]
I'm building a multi-threaded Java application where I need to run several tasks concurrently using ExecutorService. However, I'm encountering issues with race conditions when multiple threads try to ...
1
vote
1
answer
56
views
Interrupting a thread that's running a CompletableFuture [duplicate]
Consider I have an ExecutorService operating on top of a pool of daemon threads (so that I don't need to explicitly shut it down):
final var executor = Executors.newFixedThreadPool(
Runtime....
- 5,276
1
vote
0
answers
22
views
IllegalArgumentException when processing shapefile with worldwind using executor service
I am using NASA worldwind library to process a shapefile. When my code is single threaded all works fine.
But when I add parallel processing with executor service to speed up things, I start getting ...
- 7,412
3
votes
1
answer
273
views
How to limit number of virtual threads to avoid large number of DB connections?
I am currently using Executors.newFixedThreadPool to run a large number of tasks in parallel.
try(ExecutorService executorService = Executors.newFixedThreadPool(10)) {
List<Future<...
- 7,412
0
votes
2
answers
74
views
Server Sent Events in Spring - why executor service is used there?
I wonder why SseEmitter events are sent inside the executor in most tutorials.
SseEmitter emitter = new SseEmitter();
ExecutorService sseMvcExecutor = Executors.newSingleThreadExecutor(...
- 26.4k
0
votes
0
answers
66
views
Async execution of stored procedure hangs
I have an Async method in Spring boot that executes stored procedure in Oracle
@Autowired
EntityManager entityManager;
@Async ("taskExecutor")
public CompletableFuture<ResultObject> ...
- 31
0
votes
2
answers
98
views
Creating tasks in another task in Java
I wrote a function that submits tasks to ExecutorService. This function has a condition if it's true function will call itself to create another task.
private void taskCreator(int v, ExecutorService ...
- 1
1
vote
1
answer
46
views
How Can I delete Comet Executor.exe from AppData\Romaing\Comet Executor?
My friend's 11yrs old son visited at home with family and let him use my desktop. This generation kids are genius with computer, and installed cloud based game program called Comet Executor. It hidden ...
- 11
-1
votes
1
answer
57
views
Unexpected working of CopyOnWriteArrayList with newScheduledThreadPool
Creating a multi-threaded program to calculate the factorial of a no using ExecutorService. Here is the code:
package org.example.executorsExample;
// example of how to use Callable and ...
- 2,649
0
votes
0
answers
41
views
Stop when one future task has completed in java
I have 2 FutureTask Objects.
My tasks are running parallelly.
However, What I want is that as soon as one of the FutureTask method completes its execution/job the other should stop. But inside method(...
- 747
0
votes
0
answers
67
views
ExecutorService awaitTermination does not wait for threads to complete and terminates main thread immediately
I have created a ExecutorService having 3 threads using which I'm trying to process a list each having 2MM objects. I'm calling below 2 methods after submitting the 3 tasks.
executorService.shutdown();...
