[
https://issues.apache.org/jira/browse/UIMA-2162?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jerry Cwiklik closed UIMA-2162.
-------------------------------
Resolution: Fixed
Modified UIMA AS aggregate to prevent a parent CAS from accessing its Flow
object until all child CASes obtain their Flow objects.
> Fix UIMA AS race condition allowing parent CAS to hit the Flow Controller
> ahead of its child CASes
> ---------------------------------------------------------------------------------------------------
>
> Key: UIMA-2162
> URL: https://issues.apache.org/jira/browse/UIMA-2162
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Affects Versions: 2.3.1AS
> Reporter: Jerry Cwiklik
> Assignee: Jerry Cwiklik
> Fix For: 2.3.2AS
>
>
> A race condition exists in the UIMA AS Aggregate with a scaled up reply
> queue. Multiple, concurrent threads consuming CASes produced by a Cas
> Multiplier execute at different speeds (most likely due to different
> de-serialization times) allowing for a parent CAS to call Flow Controller's
> next() method *before* all of its child CASes obtain their Flow objects. Add
> necessary synchronization to orchestrate orderly flow of CASes to make sure
> that the parent CAS never reaches the Flow Controller ahead of its children.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
