[Logging] Memory leak in the LoggingClient with grpc #450
Description
Steps to repro:
$ composer require google/cloud-logging google/gax google/proto-client-php
logging-test.php
<?php
require_once __DIR__ . '/vendor/autoload.php';
use Google\Cloud\Logging\LoggingClient;
$c = new LoggingClient();
$logger = $c->logger('test-log');
$entries = [];
# Create 1000 batch of entries
for ($i = 0; $i < 1000; $i++) {
$entries[] = $logger->entry('test message');
}
while (true)
{
$logger->writeBatch($entries);
# Just in case
gc_collect_cycles();
printf(
'memory used: %d' . PHP_EOL, memory_get_usage()
);
}Set GOOGLE_APPLICATION_CREDENTIALS and run it with and without grpc extension.
With the rest, the memory usage stays the same, but with grpc, it goes up.
$ php logging-test.php
memory used: 3651568
memory used: 3662568
memory used: 3673536
memory used: 3684504
memory used: 3695472
memory used: 3706440
...
...