Bug #53287 [Opn->Asn]: PDO 5 Byte write to a broken pipe when forked
Edit report at http://bugs.php.net/bug.php?id=53287&edit=1
ID: 53287
Updated by: aharvey@php.net
Reported by: bryan dot tong at gigenet dot com
Summary: PDO 5 Byte write to a broken pipe when forked
-Status: Open
+Status: Assigned
Type: Bug
Package: PDO related
Operating System: CentOS 5.5 x86-64
PHP Version: 5.3SVN-2010-11-10 (snap)
-Assigned To:
+Assigned To: mysql
Block user comment: N
Previous Comments:
------------------------------------------------------------------------
[2010-11-10 03:21:00] bryan dot tong at gigenet dot com
Description:
------------
When switching from PHP 5.1.6 to PHP 5.3.3 the following notice has
begun to show up in our scripts.
PDO::__construct(): send of 5 bytes failed with errno=32 Broken pipe
We are running a daemon and the forked children throw this error on the
PDO construct that is used to refresh the class.
The error changes depending on whether a persistent connection is set or
not.
When persistent is on the above error is produced. Without persistent
connection applied the error is thrown when the class is destructed.
Example: $pdo = null;
send of 5 bytes failed with errno=32 Broken pipe
We have confirmed this to be apparent in PHP 5.3.3 and the trunk build.
I was unable to test on 5.2, but I was able to confirm this bug does not
occur on 5.1.6
I have tried wrapping ob functions around the calls in case the broken
pipe happened to be stdout but I think it is the mysql socket that is in
question. On that same note, switching mysql to connect via tcp did not
help.
From searching I found a site that threw this error but no discussions
of it.
Let me know any additional information that is needed.
Test script:
---------------
// without persistance
public static function shutdown(){
$base = Base::getBase();
$base->db = null;
self::$base = false;
}
// with persistance
$this->pdo = new PDO(
$dsn,
$user,
$pass,
array(
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_PERSISTENT=> true
)
);
Expected result:
----------------
The PDO class should startup quietly when persistent connections are
enabled and destruct quietly when persistent connections are disabled.
Actual result:
--------------
PDO::__construct(): send of 5 bytes failed with errno=32 Broken pipe
with persistent connections.
Base::shutdown(): send of 5 bytes failed with errno=32 Broken pipe
without persistent connections.
I believe this problem is only related to forked processes. I have
confirmed the standard page serving to not throw this.
------------------------------------------------------------------------
--
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