Rescore TopHits Failed – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch fails to rescore the top hits during a search operation. This could be due to insufficient memory, incorrect query syntax, or a problem with the underlying data. To resolve this issue, you can try increasing the memory allocation for Elasticsearch, checking your query for errors, or reindexing your data. Additionally, ensure that your Elasticsearch version is up-to-date and compatible with your data and queries.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” Rescore TopHits Failed ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: search, aggregations.

Log Context

Log “Rescore TopHits Failed” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 if (subSearchContext.sort() == null) {
 for (RescoreContext ctx : subSearchContext.rescore()) {
 try {
 topDocs = ctx.rescorer().rescore(topDocs; searcher(); ctx);
 } catch (IOException e) {
 throw new ElasticsearchException("Rescore TopHits Failed"; e);
 if (topDocs.scoreDocs.length > 0) {
 maxScore = topDocs.scoreDocs[0].score;


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?