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From "Timothy Bish (JIRA)" <>
Subject [jira] [Resolved] (AMQ-3031) Time Synchronization Solution
Date Fri, 23 Sep 2011 18:49:27 GMT


Timothy Bish resolved AMQ-3031.

    Resolution: Fixed
      Assignee: Timothy Bish

Fix applied in trunk, removed the call to scheduleAtFixedRate and replaced it with just a
call to schedule instead.  

> Time Synchronization Solution
> -----------------------------
>                 Key: AMQ-3031
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 5.4.1
>            Reporter: Erkan
>            Assignee: Timothy Bish
>            Priority: Critical
>             Fix For: 5.6.0
>         Attachments:,
> We had a Problem if we synchronize the time of 1.1.2000 to the actual date. The cpu load
increase to 170% over a long time period. We analyse the problem and find out that is a java
timer problem. We pass the classes in following packages:
> 1. \kahadb\src\main\java\org\apache\kahadb\util
> 2. activemq-core\src\main\java\org\apache\activemq\thread
> We change the TimerTask by ScheduledThreadPoolExecutor. That was the solution. I want
to discuss if that is the right solution or not. Can you analyze the classes and say if that
is the right way or not? If not can you propose a solution. If yes can you release that with
the next version.

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