Hi George,

Yes, that is what I was suggesting...upgrading directly from 1.8.2 or 
3.3 (whichever was your starting point) to 5.1. The "ant update" should 
take care of the necessary Solr index upgrades for you.

- Tim

On 4/6/2015 6:21 PM, George Stanley Kozak wrote:
> Tim:
>
> Thank you for your advice.  I did try the 5.1 ant update, but it failed.  
> Maybe if I tried it going from DSpace 3.3 or 1.8.2 directly to DSpace 5.1 
> instead of doing the intermediate step to 4.3, this might work?  I will try a 
> few other things and let everyone know what works.
>
> George Kozak
> Digital Library Specialist
> Cornell University Library Information Technologies (CULIT)
> 218 Olin Library
> Cornell University
> Ithaca, NY 14853
> 607-255-8924
>
> ________________________________________
> From: Tim Donohue <tdono...@duraspace.org>
> Sent: Monday, April 6, 2015 4:44 PM
> To: dspace-tech@lists.sourceforge.net
> Subject: Re: [Dspace-tech] Error after install of DSpace 5.1 (Additional      
>   information)
>
> Hi George,
>
> The error below is essentially saying that your Solr statistics index is
> "too old" for the version of Solr packages with DSpace 4.3 to upgrade.
>
> However, in the DSpace 5.1 upgrade process, during the "ant update"
> step, we've attempted to catch this scenario automatically -- we try to
> determine the version of a Solr index, and upgrade it automatically to
> the latest version.
>
> So, I'd recommend trying to point DSpace 5.1 at your old Solr index, and
> running "ant update". It is supposed to upgrade an old index automatically.
>
> If that doesn't work for some reason, another option is to do a more
> manual upgrade, as described in the DSpace 5.x documentation. This
> manual upgrade essentially requires downloading multiple versions of the
> Solr/Lucene core JAR, and running it against your index in order to
> upgrade it to the latest compatible version (this is essentially the
> same process that is now automated by "ant update" though)
>
> https://wiki.duraspace.org/display/DSDOC5x/Upgrading+DSpace#UpgradingDSpace-ManuallyUpgradingSolrIndexes
>
> By the way, from your earlier messages, recently I also did encounter
> that odd Solr "write.lock" error ("Index locked for write..") during a
> recent upgrade I tried to 5.1. In my situation, it seemed like it was a
> stale "write.lock" file which was somehow sitting around. After clearing
> it out, the upgrade proceeded. Admittedly, I still need to dig a bit
> further and ensure my analysis is correct.
>
> - Tim
>
> On 4/1/2015 3:16 PM, George Stanley Kozak wrote:
>> Hi, Everyone:
>>
>> I have discovered that when I try to optimize my Solr indexes when I
>> upgraded from DSpace 3.3 to 4.3
>>
>> (wget ‘http://localhost:8080/solr/statistics/update?optimize=true’)
>>
>> I get the following errors in the solr logs:
>>
>> ERROR org.apache.solr.core.CoreContainer @ Unable to create core:
>> statistics
>>
>> Format version is not supported (resource: segment _32 in resource
>> ChecksumIndexInput(MMapIndexInput(path="/cul/app/dspace/solr/statistics/data/index/segments_1p0"))):
>> 2.x. This version of Lucene only supports indexes created with release
>> 3.0 and later.
>>
>> If I later try to upgrade to 5.1, I see during the ant update:
>>
>> /cul/app/dspace/src/dspace-5.1-src-release/dspace/target/dspace-installer/build.xml:1061:
>> ERROR occurred while checking Solr index version:
>>
>> Exception in thread "main" java.io.IOException: Could not read Lucene
>> segments files in /cul/app/dspace/solr/statistics/data/index
>>
>> I know the 5.1 documentation states that you can manually update the
>> Solr indexes.  Should that be done in my 4.3 upgrade before I try to go
>> to 5.1 or should it be done in the 5.1 upgrade?
>>
>> George Kozak
>>
>> Digital Library Specialist
>>
>> Cornell University Library Information Technologies (CUL-IT)
>>
>> 218 Olin Library
>>
>> Cornell University
>>
>> Ithaca, NY 14853
>>
>> 607-255-8924
>>
>>
>>
>>
>>
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