8.4. FastVectorHighlighter

Contributed by KOJI SEKIGUCHI

As we saw in the previous section, Highlighter is one of the most fundamental tools for users to assess whether each result is worth investigating further. Highlighter is popular and widely used by Lucene applications, but when the documents are large, Highlighter can be quite time consuming if you increase the number of characters to analyze with setMaxDocCharsToAnalyze. An alternative highlighter, FastVectorHighlighter, was first added in Lucene’s 2.9 release and offers faster performance.