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How much extra space / RAM / CPU does apache solr use?

I am using a MySQL database for my webapp. I need to search for multiple tables and multiple columns, this is very similar to a full-text search inside these columns.

I need to know your experience using any full text search API (e.g. solr / lucene / mapReduce / hadoop, etc.) using plain SQL in terms of:

  • Speed ​​performance
  • Using extra space
  • Additional CPU usage (is it constantly building an index?)
  • How long does it take to create an index or is it ready to use?
  • Please let me know your experience using these frameworks.

Thank you so much!

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SOlR,

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