rector: [Parallel]: Child process timed out after 60 seconds

Bug Report

Subject	Details
Rector version	`a66be5920506820182d0208d20f02e5e8a4096d7`

Parallel mode maximizes the use of computer resources and ends with the message below. This happens when I scan large amounts of files. And only in parallel mode.

dev@4a065bbde783:$ vendor/bin/rector -n --clear-cache --no-diffs
   40/3358 [░░░░░░░░░░░░░░░░░░░░░░░░░░░░]   1%
                                                                                                                        
 [ERROR] Could not process                                                                                              
         "/web/app/vendor/rector/rector/vendor/symplify/easy-parallel/src/ValueObject/ParallelProcess.php"    
         file, due to:                                                                                                  
         "Child process timed out after 60 seconds". On line: 100                                                       
                                                                                                                        

                                                                                                                        
 [ERROR] Could not process some files, due to:                                                                          
         "Reached system errors count limit of 20, exiting...".

Minimal PHP Code Causing Issue

Cannot reproduce the issue using https://getrector.org/demo/

<?php declare(strict_types=1);

use Rector\Core\Configuration\Option;
use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;

return static function (ContainerConfigurator $containerConfigurator): void {
    $parameters = $containerConfigurator->parameters();
    $parameters->set(Option::PARALLEL, true);
    $parameters->set(Option::PATHS, [
        __DIR__ . '/app',
        __DIR__ . '/bootstrap',
        __DIR__ . '/config',
        __DIR__ . '/public',
        __DIR__ . '/database',
        __DIR__ . '/resources/lang',
        __DIR__ . '/resources/views',
        __DIR__ . '/routes',
        __DIR__ . '/tests',
    ]);
};

Expected Behaviour

[OK] 2 files would have changed (dry-run) by Rector

About this issue

Original URL
State: closed
Created 2 years ago
Comments: 22 (8 by maintainers)

Most upvoted comments

Closing as duplicate of https://github.com/rectorphp/rector/issues/6914

If it still remains after that issue is solved, we can re-open.

TomasVotruba on Jan 5, 2022

Yes, yes, I found WorkerRunner. Equivalent to the above solution:

\Rector\Parallel\WorkerRunner::run:

$this->currentFileProvider->setFile($file);
if (!$this->phpFileProcessor->supports($file, $configuration)) {
    continue;
}
$currentErrorsAndFileDiffs = $this->phpFileProcessor->process($file, $configuration);

gander on Jan 5, 2022

After changing to 120, I get this message:

 [ERROR] Could not process some files, due to:                                                                          
         "Child process error: Killed                                                                                   
         ".

gander on Jan 4, 2022