[jira] Commented: (UIMA-1223) Annotators should be initialized in the same thread that their process method will later be called on

["Marshall Schor (JIRA)" <ui...@incubator.apache.org>]

    [ https://issues.apache.org/jira/browse/UIMA-1223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12655226#action_12655226 ] 

Marshall Schor commented on UIMA-1223:
--------------------------------------

Please see UIMA-1201 - should the code that waits for all threads to stop make an exception for "daemon" threads?

> Annotators should be initialized in the same thread that their process method will later be called on
> -----------------------------------------------------------------------------------------------------
>
>                 Key: UIMA-1223
>                 URL: https://issues.apache.org/jira/browse/UIMA-1223
>             Project: UIMA
>          Issue Type: Bug
>          Components: Async Scaleout
>    Affects Versions: 2.2.2
>            Reporter: Adam Lally
>            Assignee: Jerry Cwiklik
>         Attachments: uimaj-as-activemq-UIMA-1223-patch.txt, uimaj-as-core-UIMA-1223-patch.txt
>
>
> It is more convenient if an annotator is initialized on the same thread that it is later called on.  Some components may use thread-local data and they won't work in UIMA-AS currently.  Another advantage of doing the initialization in the processing thread is that you could initialize multiple instances of the annotator in parallel instead of sequentially, which may be faster for a multi-core machine.

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