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From Mike Carey <>
Subject Re: Metadata changes
Date Mon, 14 Dec 2015 21:12:50 GMT

3)  While you are in there we should perhaps add a couple of built-in 
types (e.g., the empty type and the type with nothing but a 
system-generated object id called oid).  These could be really handy for 
folks working with data w/o schemas.


On 12/14/15 10:12 AM, Steven Jacobs wrote:
> Hi all,
> I'm implementing a change so that datasets can use datatypes from alternate
> data verses (previously the type and set had to be from the same
> dataverse). Unfortunately this means another change for Dataset Metadata
> (which will now store the dataverse for its type).
> As such, I had a couple of questions:
> 1) Should this change be thrown into the release branch, as it is another
> Metadata change?
> 2) In implementing this change, I've been looking at the Metadata secondary
> indexes. I had a discussion with Ildar, and it seems the thread on Metadata
> secondary indexes being "hacked" has been lost. Is this also something that
> should get into the release? Is there anyone currently looking at it?
> Steven

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