[BUG] Memcached Tracing Not Working with PHP 8.0.16 and 0.70.0 and 0.70.1 #1535
Description
Bug description
Using the memcached module with PHP 8.0.16 with dd-trace-php and memcache tracing does not appear in DD APM.
As soon as 8.0.16 comes online, tracing stops.
Reverting to 7.4.28 and memcached tracing comes back.
mod_Memcache built from:
https://github.com/php-memcached-dev/php-memcached
PHP version
PHP 7.4.28 and PHP 8.0.16
Tracer version
0.70.0 and 0.70.1
Installed extensions
core mod_so mod_watchdog http_core mod_log_config mod_logio mod_version mod_unixd mod_access_compat mod_alias mod_auth_basic mod_authn_core mod_authn_file mod_authz_core mod_authz_host mod_authz_user mod_autoindex mod_deflate mod_dir mod_env mod_filter mod_headers mod_mime prefork mod_negotiation mod_php7 mod_remoteip mod_reqtimeout mod_rewrite mod_setenvif mod_speling mod_status
OS info
(PHP 7.4) Linux ab8a10850926 4.14.262-200.489.amzn2.x86_64 #1 SMP Fri Feb 4 20:34:30 UTC 2022 x86_64
Diagnostics and configuration
Output of phpinfo() (ddtrace >= 0.47.0)
PHP 7.4 DD PHP Trace Config
{"date":"2022-03-02T05:53:21Z","os_name":"Linux 7da1241b144d 4.14.262-200.489.amzn2.x86_64 #1 SMP Fri Feb 4 20:34:30 UTC 2022 x86_64","os_version":"4.14.262-200.489.amzn2.x86_64","version":"0.70.0","lang":"php","lang_version":"7.4.21","env":"qa-r2d2","enabled":true,"service":"php","enabled_cli":false,"agent_url":"http://172.17.0.1:8126","debug":false,"analytics_enabled":false,"sample_rate":1,"sampling_rules":[],"tags":[],"service_mapping":[],"distributed_tracing_enabled":true,"priority_sampling_enabled":true,"dd_version":null,"architecture":"x86_64","sapi":"apache2handler","datadog.trace.request_init_hook":"/opt/datadog-php/dd-trace-sources/bridge/dd_wrap_autoloader.php","open_basedir_configured":false,"uri_fragment_regex":null,"uri_mapping_incoming":null,"uri_mapping_outgoing":null,"auto_flush_enabled":false,"generate_root_span":true,"http_client_split_by_domain":true,"measure_compile_time":true,"report_hostname_on_root_span":false,"traced_internal_functions":null,"auto_prepend_file_configured":false,"integrations_disabled":"default","enabled_from_env":true,"opcache.file_cache":null}
PHP 8.0 DD PHP Trace Config
{"date":"2022-03-01T23:13:46Z","os_name":"Linux bbf65d0242c2 4.14.262-200.489.amzn2.x86_64 #1 SMP Fri Feb 4 20:34:30 UTC 2022 x86_64","os_version":"4.14.262-200.489.amzn2.x86_64","version":"0.70.0","lang":"php","lang_version":"8.0.8","env":"qa-r2d2","enabled":true,"service":"php","enabled_cli":false,"agent_url":"http://172.17.0.1:8126","debug":false,"analytics_enabled":false,"sample_rate":1,"sampling_rules":[],"tags":[],"service_mapping":[],"distributed_tracing_enabled":true,"priority_sampling_enabled":true,"dd_version":null,"architecture":"x86_64","sapi":"apache2handler","datadog.trace.request_init_hook":"/opt/datadog-php/dd-trace-sources/bridge/dd_wrap_autoloader.php","open_basedir_configured":false,"uri_fragment_regex":null,"uri_mapping_incoming":null,"uri_mapping_outgoing":null,"auto_flush_enabled":false,"generate_root_span":true,"http_client_split_by_domain":true,"measure_compile_time":true,"report_hostname_on_root_span":false,"traced_internal_functions":null,"auto_prepend_file_configured":false,"integrations_disabled":"default","enabled_from_env":true,"opcache.file_cache":null}
Upgrading info
PHP 7.4.28 and dd-trace-php works for tracing memcache, PHP 8.0.16 and dd-trace-php does not work for tracing memcache