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https://issues.apache.org/jira/browse/QPID-3559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13158452#comment-13158452
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Robbie Gemmell commented on QPID-3559:
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I think it might be preferable to use an instance variable for the
SimpleDateFormat object and just synchronize its access, or something else to
similar effect, rather than use a new instance per method call. I know its not
a big object but it could generate a significant amount of garbage due to being
used per-message, and the JMX interface already generates quite a lot :)
> SimpleDateFormat used in thread unsafe manner in JMX interface
> --------------------------------------------------------------
>
> Key: QPID-3559
> URL: https://issues.apache.org/jira/browse/QPID-3559
> Project: Qpid
> Issue Type: Bug
> Components: Java Broker
> Affects Versions: 0.10, 0.11, 0.12, 0.13
> Reporter: Keith Wall
> Assignee: Robbie Gemmell
> Priority: Minor
> Fix For: 0.15
>
>
> AMQQueueMBean uses a static SimpleDateFormat instance which is thread-unsafe.
> The user may see corruption of JMS Expiration dates or JMS Timestamps
> reported via the JMX interface.
> This problem only affects the MBean, JMS messaging clients wont be affected.
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