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https://issues.apache.org/jira/browse/UIMA-3674?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marshall Schor resolved UIMA-3674.
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Resolution: Fixed
> Allow multiple iterators in different threads to read the CAS
> -------------------------------------------------------------
>
> Key: UIMA-3674
> URL: https://issues.apache.org/jira/browse/UIMA-3674
> Project: UIMA
> Issue Type: Improvement
> Components: Core Java Framework
> Affects Versions: 2.5.0SDK
> Reporter: Marshall Schor
> Assignee: Marshall Schor
> Priority: Minor
> Fix For: 2.5.1SDK
>
>
> Some applications scale out on multi-core machines by using CAS Multipliers.
> Sometimes, it makes sense when the new CASes have a lot of identical data, to
> have the common part of these in another CAS which can be set up and shared
> (read-only) by other threads. Unfortunately, this design suffers from random
> failures in the CAS iterator code. Figure out what's wrong and fix this, to
> start supporting read-only CASes being accessed simultaneously in a
> multi-core platform on multiple threads. Include a JUnit test case, too, if
> possible.
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