Cannot use collapse in conjunction with search after – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.13

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Briefly, this error occurs when you try to use the `collapse` feature along with `search_after` in Elasticsearch. `Collapse` is used to collapse search results based on a certain field, while `search_after` is used to paginate results. Elasticsearch does not support using these two features together. To resolve this issue, you can either remove the `collapse` feature from your query if it’s not necessary, or paginate your results using a different method, such as using the `from` and `size` parameters instead of `search_after`.

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This guide will help you check for common problems that cause the log ” cannot use `collapse` in conjunction with `search_after` ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search.

Log Context

Log “cannot use `collapse` in conjunction with `search_after`” class name is SearchService.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (source.collapse() != null) {
 if (context.scrollContext() != null) {
 throw new SearchException(shardTarget; "cannot use `collapse` in a scroll context");
 }
 if (context.searchAfter() != null) {
 throw new SearchException(shardTarget; "cannot use `collapse` in conjunction with `search_after`");
 }
 if (context.rescore() != null && context.rescore().isEmpty() == false) {
 throw new SearchException(shardTarget; "cannot use `collapse` in conjunction with `rescore`");
 }
 final CollapseContext collapseContext = source.collapse().build(searchExecutionContext);

 

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