Comment 3 for bug 893348

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Gor Martsen (gor-x) wrote : Re: [Bug 893348] Re: max_user_connections issue

Hi Patrick

We are working on it too.
I will send you more details when be back home.

Regards,
Gor

Sent from my iPhone

On 2011-12-28, at 9:55 PM, Patrick Crews <email address hidden> wrote:

> Hi. I'll be taking a look at this bug soon and will be in touch if I
> have issues duplicating the problem.
>
> Thanks for the bug report,
> Patrick
>
> ** Changed in: percona-server
> Importance: Undecided => Medium
>
> ** Changed in: percona-server
> Assignee: (unassigned) => Patrick Crews (patrick-crews)
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/893348
>
> Title:
> max_user_connections issue
>
> Status in Percona Server with XtraDB:
> New
>
> Bug description:
> Hello
>
> We are using max_user_connections=30 to prevent too many connections by user mistake.
> Three weeks ago we upgraded 6 servers to Percona-Server-5.5 from 5.1.
>
> And right after upgrade we noticed a problem with max_user_connections
> on all upgraded servers.
>
> Users that connects to database very often, started to experience problem:
> User ***** already has more than 'max_user_connections' active connections
> But "SHOW PROCESSLIST" did not list any active connections for this user!
>
> How you know, 5.5 has max_user_connections in mysql.user table.
> We put max_user_connections=30 into this table, instead of global variable and nothing changes.
>
> Known symptoms:
> - Problem does not come up after mysql restart. It takes some time.
> - "flush privileges" helps to reset counter, but after few hours issue is active again.
>
> It fills like max_user_connections counter for specific (very active)
> users doesn't reset for some bug reason.
>
> Server hardware:
> 32GB RAM. 4x4 core CPUs, SAS HDDS in RAID1 for /var/lib/mysql.
> OS: centos5 x86_64
>
> I am ready to provide any information that will help to find and
> resolve this issue.
>
> Thank you.
>
> Regards,
> Gor
>
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