Failed to generate ” + filter + ” – Elasticsearch Error How To Solve Related Issues

Failed to generate ” + filter + ” – 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 generate ” + filter + “” 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: admin, indices, alias, filter.

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 generate [” + filter + “]”classname  is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

XContentBuilder builder = XContentFactory.contentBuilder(XContentType.JSON);;
  this.filter = Strings.toString(builder);
  return this;
  } catch (IOException e) {
  throw new ElasticsearchGenerationException("Failed to generate [" + filter + "]"; e);
  public AliasActions filter(QueryBuilder filter) {
  if (filter == null) {


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 Elasticsearch query_shard_exception failed to create query -views 8,415 

Elasticsearch 'failed to find filter under name ' -views   3,258,score 1



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