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https://issues.apache.org/jira/browse/UIMA-4126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marshall Schor resolved UIMA-4126.
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Resolution: Fixed
> if allow_duplicate_add_to_indices, delta CAS needs to remove all
> -----------------------------------------------------------------
>
> Key: UIMA-4126
> URL: https://issues.apache.org/jira/browse/UIMA-4126
> Project: UIMA
> Issue Type: Bug
> Components: Core Java Framework
> Reporter: Marshall Schor
> Assignee: Marshall Schor
> Fix For: 2.7.0SDK
>
>
> UIMA-4100 fixes an issue around Delta deserialization - when updating an
> existing, indexed FS, by removing the FS from the index before updating the
> feature values, and then adding it back.
> If the JVM property uima.allow_duplicate_add_to_indices is defined, then it's
> possible the FS may be added to the indices multiple times. To prevent index
> corruption, in this case, loop the remove-from-index operation until it fails
> to find the item in the index, so it removes all instances. And when
> re-adding it back, add it back the same number of times it was removed.
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