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https://issues.apache.org/jira/browse/SANDESHA2-184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amila Chinthaka Suriarachchi updated SANDESHA2-184:
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Attachment: patch.txt
This patch implement the above mentioned improvement.
This also includes a change to MakeConnectionProcessor.java to prevent a
deadlock which can occur if a thread does not commit before getting the worker
lock.
> Preventing Dead lock isses with jdbc persistence storage
> --------------------------------------------------------
>
> Key: SANDESHA2-184
> URL: https://issues.apache.org/jira/browse/SANDESHA2-184
> Project: Sandesha2
> Issue Type: Improvement
> Reporter: Amila Chinthaka Suriarachchi
> Attachments: patch.txt
>
>
> There are some random deadlocks occurs with jdbc persistence storage since
> Sandesha2 core access the table resources in different orders. Although these
> deadlocks are rear there is a possibility of getting them.
> As a solution for this problem we can lock the transactions at the storage
> level and let only one transaction to proceed. Then there is no chance for
> dead locks.
> This appears to be not a proper solution but it can prevent the deadlock
> occurrences.
> This may reduce the performance since it prevents parallel processing and is
> not solving the problem in a distributed environment.
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