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Hello Friends, I want to know by any way we can use solr data import handler with cassandra. If I can get any reference site or example would be good help.
Thanks
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In other words, a full-import will execute exactly 1 query for each defined entity + N queries for each sub-entity, while a delta-import will execute 1 query to get given entity's changed elements list + N queries for each changed element + another N queries for each defined sub-entity.
After executing above cqlsh query the line prompt changes to [copy] let's have a look. Starting copy of cluster1. Data with columns [id, firstname, lastname]. Now, insert the row value of table which you want to import.
delta-import. For incremental imports and change detection. Only the SqlEntityProcessor supports delta imports. For example: http://localhost:8983/solr/dih/dataimport?command=delta-import . This command supports the same clean , commit , optimize and debug parameters as full-import command described below.
The Data Import Handler (DIH) provides a mechanism for importing content from a data store and indexing it. In addition to relational databases, DIH can index content from HTTP based data sources such as RSS and ATOM feeds, e-mail repositories, and structured XML where an XPath processor is used to generate fields.
I'd have a look at datastax's page on cassandra integration with solr. Also look at this Github repository, its a library for cassandra and solr.
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That gitHub library is old , only Datastax Enterprise uses the integration of Cassandra with Solr, but its not free.
You can see Stargate-core soluton for cassandra but it uses lucene Another one is Stratio Cassandra again it used Lucene
Hope this helps
Regards Asit
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