On 27 Aug 2016, at 08:17, Tim Robertson <trobertson@gbif.org> wrote:

The easiest approach is actually for us to delete all records before indexing the new version.

Just before you are ready for it to be reindexed, if you let us know it’s a trivial thing to do and would be complete in around 1hr.

Thanks,

Tim

From: Roderic Page <Roderic.Page@glasgow.ac.uk>
Date: Saturday 27 August 2016 at 08:18
To: Tim Robertson <trobertson@gbif.org>
Cc: "api-users@lists.gbif.org" <api-users@lists.gbif.org>
Subject: Re: [API-users] What happens to previous data after dataset/crawl?

Thanks Tim,

Specific example I'm working on is DNA barcoding data from BOLD. Their data dumps and web API differ in how they identify same record (basically whether they include the suffix '.COI-5P' or not) which is deeply annoying. So I may have a case where I need to update ids for large number of records, and want the other version of those records to be replaced. Sounds like I would need to ask you specifically to delete old ones if I want to this to happen. 

Regards,

Rod

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On Sat, Aug 27, 2016 at 7:12 AM +0100, "Tim Robertson" <trobertson@gbif.org> wrote:

Hi Rod

It is not done automatically due to the fact it normally happens due to some mapping error rather than by design.

Today we trigger it manually, but do want to automate it - probably only for cases it seems genuine. 

Cheers,

Tim

On 27 Aug 2016, at 08:01, Roderic Page <Roderic.Page@glasgow.ac.uk> wrote:

Just wanted to check the consequences of the following dataset operation.

Say I have a dataset with 10 occurrences with occurrence ids 1-10. In my local database I now assign those 10 occurrences new identifiers a-j. If I create a new DwCA file for my data and crawl the new archive, my expectation is:

1. Old data with ids 1-10 is deleted from GBIF index 

2. New data with ids a-j is indexed

So, end result is dataset has 10 occurrences. I'm asking because I know in the past the some datasets have changed identifiers and this has resulted in records with old and new identifiers coexisting in GBIF index, resulting in duplicated data.

Obviously it would be nice to have stable, unchanging identifiers for occurrences, but the for data set I'm working with the creators have changed their minds between versions of the data :(

Regards,

Rod

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