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Posted to server-dev@james.apache.org by "Tellier Benoit (JIRA)" <ji...@apache.org> on 2015/01/21 10:14:35 UTC
[jira] [Updated] (MAILBOX-210) A data race is possible with
Cassandra UID generation
[ https://issues.apache.org/jira/browse/MAILBOX-210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tellier Benoit updated MAILBOX-210:
-----------------------------------
Attachment: fix_cassandra_uid_provider.patch
Also do conditionnal updates when UID is equal to 0.
> A data race is possible with Cassandra UID generation
> -----------------------------------------------------
>
> Key: MAILBOX-210
> URL: https://issues.apache.org/jira/browse/MAILBOX-210
> Project: James Mailbox
> Issue Type: Bug
> Reporter: Tellier Benoit
> Attachments: fix_cassandra_uid_provider.patch
>
>
> Nothing as critical as MAILBOX-209 but there is a race condition if the UID current value is null.
> If so we set the value to one without checking if the value was updated.
> This may cause duplicated UID for UID 1, and possible message loss ( as the primary key is the pair of the mailbox ID and the message UID ). We definitly don't want that to happen.
> Solving this bug is easy : we should also use conditionnal updates when UID is equal to 0.
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