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https://issues.apache.org/jira/browse/AMQ-3618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13162841#comment-13162841
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Rob Davies commented on AMQ-3618:
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Thank you for contributing Jacob!
> when using openwire with cacheEnabled=false memory is wasted on
> unmarshallCache[] and marshallCache[]
> -----------------------------------------------------------------------------------------------------
>
> Key: AMQ-3618
> URL: https://issues.apache.org/jira/browse/AMQ-3618
> Project: ActiveMQ
> Issue Type: Bug
> Reporter: jacob hameiri
> Assignee: Rob Davies
> Priority: Minor
> Fix For: 5.6.0
>
> Attachments: OpenWireFormat.patch
>
>
> The OpenWireFormat has 2 array fields unmarshallCache[] and marshallCache[]
> which together consume 256K, in case of many TopicConsumers when using
> FilePendingMessageCursor this causes allot of memory to be used by the
> OpenWire caching arrays. even if you disable caching these arrays are still
> created.
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