An Introduction to DSE Field Transformers : DataStax
Each insert or update of a Cassandra row triggers a new indexing on Solr, inserting or updating the document that corresponds to that Cassandra row. This work is done automatically on the behalf of the inserts, updates and deletions of rows (a deletion will automatically remove the corresponding Solr document). There is usually a direct mapping between Cassandra columns and Solr document fields.
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