[Vtigercrm-commits] [Vtiger development] #8239: Concurrency support for ID generation

[Vtiger development]

#8239: Concurrency support for ID generation
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 Reporter:  Baptiste   |      Owner:  developer
     Type:  patch      |     Status:  new
 Priority:  major      |  Milestone:  Unassigned
Component:  vtigercrm  |    Version:  6.1.0
 Severity:  Medium     |   Keywords:
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 We a lot of simultaneous users on the platform (about 120 users) and
 sometime we have an issue with a duplicate id.
 I found the issue, it's a race condition in CRMEntity.php,
 setModuleSeqNumber().

 When 2 actions are synchronous from 2 users, the same ID is returned by
 the query, then it's the same ID in the UPDATE request.

 You need to use "LOCK·TABLE·vtiger_modentity_num·WRITE" before the SELECT,
 and "UNLOCK·TABLES" after the "UPDATE".

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Ticket URL: <http://trac.vtiger.com/cgi-bin/trac.cgi/ticket/8239>
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Vtiger CRM