Pre_tags are set but post_tags are not set – How to solve this Elasticsearch error

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Pre_tags are set but post_tags are not set – How to solve this Elasticsearch error

Opster Team

March-22, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” pre_tags are set but post_tags are not set ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up to analyze Elasticsearch configuration and help resolve this error.

Log Context

Log “pre_tags are set but post_tags are not set”classname  is AbstractHighlighterBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

}; HIGHLIGHT_QUERY_FIELD);
 return (XContentParser p; HB hb) -> {
 try {
 parser.parse(p; hb; null);
 if (hb.preTags() != null && hb.postTags() == null) {
 throw new ParsingException(p.getTokenLocation(); "pre_tags are set but post_tags are not set");
 }
 } catch (IOException e) {
 throw new RuntimeException(e);
 }
 return hb;

 

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