Hi Bryan,

It's really hard to say what could be going on without you digging more 
into which items matched in 5.8 which didn't match in 7.3 (or visa versa).  
It could be that 5.8 was actually returning incomplete results and the 
results are *more accurate* in 7.3.  Or, as you imply, it's also possible 
the other way around...somehow 7.3 isn't returning as accurate of results 
as 5.8.  

But, it is worth pointing out that the Solr search settings under DSpace 
are enhanced little by little in every release. So, there were many 
changes/improvements in 6.x and continue to be more in 7.x.  We've also 
upgraded Solr several times in those releases, so it's possible that Solr 
itself is returning slightly different results based on its new/updated 
behavior.

Overall, until you dig more deeply into those search result differences 
between 5.x vs 7.x, I wouldn't assume that there's a bug in 7.x. There's 
also the possibility you are just seeing improvements that resulted in more 
accurate results.  But, that said, if you are able to pinpoint some sort of 
buggy behavior, then definitely let us know & we'll work to get it assigned 
and fixed in a future 7.x release.

Tim

On Monday, August 29, 2022 at 11:32:51 PM UTC-5 [email protected] wrote:

> Hi,
>
> I am migrating Dspace from 5.8 to a new 7.3. I have followed the 
> documentation and completed all tasks - 
> https://wiki.lyrasis.org/display/DSDOC7x/Migrating+DSpace+to+a+new+server 
> and https://wiki.lyrasis.org/display/DSDOC7x/Upgrading+DSpace
>
> When I search, for example, I get 26 items from Dspace 7.3 whereas 79 are 
> from Dspace 5.8. When searching for an empty space, I get similar total 
> counts e.g. 5172 and 5192.
>
> Did anyone experience this? To be clear, I have run the reindexing 
> commands found in the documentation above and the commands were completed 
> successfully.
>
> There was no useful log found since this is technically not an error.
>
> Any idea or suggestion would be appreciated.
>
> Regards,
> Bryan
>
>

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