`slice` cannot be used outside of a scroll context – How to solve this Elasticsearch error

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`slice` cannot be used outside of a scroll context – How to solve this Elasticsearch error

Opster Team

July-20, 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 ” `slice` cannot be used outside of a scroll context ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: scroll and 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 “`slice` cannot be used outside of a scroll context”classname  is SearchService.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

context.searchAfter(fieldDoc);
 } 
 if (source.slice() != null) {
 if (context.scrollContext() == null) {
 throw new SearchException(shardTarget; "`slice` cannot be used outside of a scroll context");
 }
 context.sliceBuilder(source.slice());
 } 
 if (source.storedFields() != null) {

 

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