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https://issues.apache.org/jira/browse/UIMA-1129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12625762#action_12625762
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Adam Lally commented on UIMA-1129:
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> -1. We can't have arbitrary clients turn on Delta CAS mode for everybody
> else. This must be a global setting.
What we want is that when one client turns on delta CAS it does not affect
others, but I think that means it must NOT be a global setting. It looks to me
like reset() is clearing the mark, so in the case where a client uses the mark
and then releases the CAS back to a pool for other clients to use, other
clients will not be affected. So I am not sure I see the problem you are
objecting to.
> >
> > bq. It's also faster.
> > Could you please clarify. Are you saying checking a boolean is faster than
> > checking if an object reference is null ?
> I think so, though I admit it's only conjecture.
My intuition is that these ought to be the same speed - aren't both just
checking a memory location to see if equals some constant value? Without some
proof that a boolean check is faster, I'm inclined to say the current
implementation is fine.
> XMI serialization support for delta CAS
> -----------------------------------------
>
> Key: UIMA-1129
> URL: https://issues.apache.org/jira/browse/UIMA-1129
> Project: UIMA
> Issue Type: New Feature
> Components: Core Java Framework
> Reporter: Bhavani Iyer
> Assignee: Bhavani Iyer
> Attachments: UIMA-1129.patch
>
>
> Extend XMI serialization to enable serializing only the changes to the CAS.
> The requirement for delta CAS support in order to to reduce serialization
> overhead associated with remote services is described in the wiki page found
> here:
> http://cwiki.apache.org/UIMA/reducing-overhead-for-remote-service-calls.html.
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