We are upgrading Sitecore 8 to 9.3 for that we upgraded Lucene to solr
Can we compare Lucene and Solr index files so that we will be able to know the newly generated solr index files have the same data or not
It seem technically possible as you could use Luke to explore the content of the Lucene index folder.
While Solr data can be queried via either Sitecore UI, or Solr admin.
No. The indexes are very different even though the underlying technology is similar. What I find best is to have an old and new version of the same site with the same data. Then you can compare site search pages and any part of the site that runs on search.
Related
We have to migrate customers using Solr to Solr Cloud. I know that the cleanest way is to re-import data again, but it would last for a really long time.
We tried to create collection in Solr Cloud and then copy there standalone solr indexes. It works.
The question is, whether it is worthy to try this in production. What can go wrong?
There are indexes of some solr cores which I convert them from solr4 to solr6 but in solr standalone mode. so they don't have the "version" field that solrcolud require.
Here now I want to migrate to solrcloud 6 and I need to put them under cluster. Because the version field dose not exist there in these indexes when I put them Under a solrcloud leader core on the data directory the replicas in the shard didn't update as I saw. so I decided to read them by lucene, get each doc fields, add them to a solrdoc and then put them doc by doc in solrcloud. But cause there are fields that not stored in these indexes so all fields that exist here in these indexes don't move there.
At the end it seems there is no way for me than re-indexing.
I appreciate if there is any better idea or solutions that can help me migrate more easily.
If there is any chance to reindex, just do so, it's going to be the best in the end (you have to deal with two separate issues: a) migrate from 4.X to 6.0 and b)from standalone to SolrCloud...it's going to be messy).
If you cannot reindex:
are all your fields stored OR have docValues=true? If so, you can get the original contents of your docs. Read them and index them with solrj or with some script.
if not, and you have a version field: try to manually put the index in Solrcloud. Not straighforward, but possible.
if you don't have a version field, I think it is impossible to put the index as is in Solrcloud (although some post on the net make you think it is). You could try to write some lucene code to add version field to all docs (with values that make sense), but this should be the very last resort.
Does anybody know how to have Lucene and Solr together in the same Sitecore Instalation?
Sitecore states that is possible here:
https://doc.sitecore.net/sitecore_experience_platform/setting_up__maintaining/search_and_indexing/indexing/using_solr_or_lucene
You can mix Lucene and Solr, and, for example, use Solr for xDB and
Lucene for content search at the same time. If an index is small, it
is much easier to manage as a Lucene index because there is little to
no overhead to set it up.
But there is no reference on how to configure it.
Any advise is welcome.
Cheers!
In words, your analytic indexes will be using SOLR and your content search indexes will be using Lucene.
To configure your analytic indexes to use SOLR, you can check the following documentation from Sitecore: https://doc.sitecore.net/sitecore_experience_platform/setting_up__maintaining/xdb/configuring_servers/configure_a_processing_server#_Solr_configuration
By default, Sitecore already configured Lucene to be used for Content Search. So, for this, there is no change required.
However, I am not sure that SOLR and Lucene can be used for Content Search or xDB at the same time because of its configuration. For example, the Content Search makes use of the index configuration master, web and core. If you decide to use SOLR for Content Search, you will need to disable the Lucene configuration file from the Include folder.
Thanks
I am using alfresco 4.1 & want to integrate it with solr search so that solr can access all alfresco content (keeping in mind authentication etc).
I know solr is inbuilt inside alfresco but i have a solr instance running separately which integrates searches from a number of other sources also such as DBs etc.
Which would be the best way forward?
Regards.
I got one of the way to do it. I can install solr on a separate server & use solrj apis within alfresco for integration.
Programatically, i can dump alfresco content for indexing to solr search using solrj using custom built xml for alfresco contents. Once xml are available to solr, it can be consumed by solr server & can be indexed by it. These indexes would be separate from alfresco OOTB indexes.
Once indexed, it is good to go. Using solr apis, i can search same content in solr server, instead of alfresco plus benefit of integrating multiple content sources with solr so that solr can be used as universal search.
However, when content items go to large volumes, i could see a performance hit as for every content item in alfresco , solr needs to index it. Any workaround possible?
Regards.
We are using Liferay (6.1.20 EE) with Solr search engine.
Now Solr indexes everything. Can we somehow set up Solr (or Liferay) to prevent one Site from being indexed?
It means all articles documents present on that Site would not be indexed and would not be present in Solr.
1) Should this be done with Solr configurations/schema filters before Index starts?
OR
2) Should it be customized in Liferay Indexer classes (with help of Hooks or EXT) to skip content being indexed.
Thanks for your thoughts and suggestions.
Regards,
Kris
You could create a custom version of the solr-web WAR file that you need to install to make the Liferay/SOLR integration work. In the WAR file you'll find SolrIndexWriterImpl. This is the place that everything passes through that will be indexed in SOLR. You could create your own custom implementation of this class that uses the information in the SearchContext parameter, that's passed into each method, to decide if something should be indexed or not.
The latest code for solr-web can be found here: http://svn.liferay.com/repos/public/plugins/trunk/webs/solr-web/
Based on this code I was also able to create a solr-web.war that works on the more recent SOLR versions instead of the ancient 1.4.1 version Liferay uses by default.