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https://issues.apache.org/jira/browse/CALCITE-671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14485660#comment-14485660
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Nick Dimiduk commented on CALCITE-671:
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ByteString, j.u.Date, and j.s.Date are the only three "special" types in
ColumnMetaData.Rep, so this should be the only other thing to consider
specially here.
> ByteString does not deserialize properly as a FetchRequest parameterValue
> -------------------------------------------------------------------------
>
> Key: CALCITE-671
> URL: https://issues.apache.org/jira/browse/CALCITE-671
> Project: Calcite
> Issue Type: Bug
> Reporter: Nick Dimiduk
> Assignee: Julian Hyde
> Attachments: 671.patch
>
>
> I think the reason here is that FetchRequest#parameterValues is declared as a
> List<Object>, which Jackson interprets as a request to serialize as plain
> objects (see [Deserializing, other|http://wiki.fasterxml.com/JacksonFAQ]).
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