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From "Douglas Miranda (JIRA)" <>
Subject [jira] Commented: (AMQ-1380) ActiveIO does not close ControlFile
Date Mon, 03 Nov 2008 13:55:05 GMT


Douglas Miranda commented on AMQ-1380:

hello Friends!

I'd like to know how can I apply that patch? I've tried to find a way, but I can't get find
out anything. 

can anybody give some help?

Thank you!

> ActiveIO does not close ControlFile 
> ------------------------------------
>                 Key: AMQ-1380
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 4.1.1
>         Environment: All
>            Reporter: Joe Kutner
>             Fix For: 5.1.0
>         Attachments: patch.txt
> The following exception is thrown from an ActiveMQ instance that is in Slave mode that
causes it to crash.
> ***/*******/*****/*******/journal/control.dat (Too many
open files)
>         at Method)
>         at<init>(
>         at<init>(
>         at
>         at<init>(
>         at<init>(
>         at
>         at
>         at
>         at
>         at
>         ... 41 more
> The problem is that each time ActiveIO checks to see if control.dat is locked it creates
a new  If the control.dat file is locked, it fails to close the
> This exception always will be thrown from an instance in Shared-File-System Slave mode
that continues to check the Journal file (which the Master has locked).  But the rate at which
is is thrown depends on the maximum number of files the OS allows to be open.  You can check
how many files are open with 'ulimit -a'

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