Data Import Handler – removing data from index

Deleting data from an index using DIH incremental indexing, on Solr wiki, is residually treated as something that works similarly to update the records. Similarly, in a previous article, I used this shortcut, the more that I have given an example of indexing wikipedia data that does not need to delete data.

Having at hand a sample data of the albums and performers, I decided to show my way of dealing with such cases. For simplicity and clarity, I assume that after the first import, the data can only decrease.

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