Failed to build inner_hits – Elasticsearch Error How To Solve Related Issues

Failed to build inner_hits – Elasticsearch Error How To Solve Related Issues

Updated: July-20

Elasticsearch Version: 1.7-8.0

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


This guide will help you check for common problems that cause the log “failed to build inner_hits” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: search.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to discover the cause of many errors and provides suitable actionable recommendations (free tool that requires no installation). 

Log Context

Log”failed to build inner_hits”classname  is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (innerHitBuilders.size() > 0) {
  for (Map.Entry entry : innerHitBuilders.entrySet()) {
  try {
  entry.getValue().build(context; context.innerHits());
  } catch (IOException e) {
  throw new SearchException(shardTarget; "failed to build inner_hits"; e);
  if (source.sorts() != null) {
  try {

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 Elastic Search – Failed To Create Query -views 2,693 ,score 3

When using inner_hits on nested query, we are getting an …  

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