_count must be the last element in the path – Elasticsearch Error How To Solve Related Issues



_count must be the last element in the path – 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 “_count must be the last element in the path” 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, aggregations.


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”_count must be the last element in the path”classname  is InternalMultiBucketAggregation.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

}
  Aggregations aggregations = getAggregations();
  String aggName = path.get(0);
  if (aggName.equals("_count")) {
  if (path.size() > 1) {
  throw new InvalidAggregationPathException("_count must be the last element in the path");
  }
  return getDocCount();
  } else if (aggName.equals("_key")) {
  if (path.size() > 1) {
  throw new InvalidAggregationPathException("_key must be the last element in the path");

 

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 Counting number of documents using Elasticsearch -views 77,632 ,score 49

How do I retrieve more than 10000 results/events in Elastic-search -views   49,110,score 31

 

 

About Opster

Opster detects, prevents, optimizes and automates everything needed to run mission-critical Elasticsearch

Find Configuration Errors

Analyze Now