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https://issues.apache.org/jira/browse/ACCUMULO-246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13180723#comment-13180723
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John Vines commented on ACCUMULO-246:
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I think a flag is preferred, with a default behavior to error on bad
intersection.
> Improve scan authorizations behavior
> ------------------------------------
>
> Key: ACCUMULO-246
> URL: https://issues.apache.org/jira/browse/ACCUMULO-246
> Project: Accumulo
> Issue Type: Task
> Components: client
> Reporter: Billie Rinaldi
> Labels: authorization, scan
>
> When a user creates a scanner a set of Authorizations is passed. If the
> authorizations passed to the scanner are not a subset of the user's
> authorizations, then an exception is thrown. An alternative would be to
> intersect the set of scan authorizations with the user's authorizations.
> Many users have had trouble understanding the "silent intersection" behavior,
> which resulted in switching to throwing an Exception. However, in situations
> where the user's authorizations are lazily updated, and for very long running
> scans, intersection would be preferable. Possible fixes are 1) adding a flag
> to indicate whether to intersect or throw an exception or 2) making it easier
> for the user to perform the intersection manually (which would fix some
> issues, but not the long-running scans).
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