Unknown operator – Elasticsearch Error How To Solve Related Issues

Unknown operator – Elasticsearch Error How To Solve Related Issues

Updated: July-20

Elasticsearch Version: 1.7-8.0

This guide will help you check for common problems that cause the error message”Unknown operator”. To understand what might cause it to appear, read bellow frequent issues related to the Elasticsearch concepts: parser, plugin.

Advanced users might want to skip right to trying out the Elasticsearch Error Check-Up, which analyses ES to discover the cause of many errors to provide actionable recommendations (JSON based, no fee and just 2 minutes to complete).

Log Context

Log”Unknown operator {}”classname  is ExpressionBuilder.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

case EqlBaseParser.GT:
  return new GreaterThan(source; left; right; zoneId);
  case EqlBaseParser.GTE:
  return new GreaterThanOrEqual(source; left; right; zoneId);
  throw new ParsingException(source; "Unknown operator {}"; source.text());
  public Expression visitValueExpressionDefault(ValueExpressionDefaultContext ctx) {

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 : Unknown key for a VALUE_STRING in [scroll] -views 5,000 ,score 1

How to search date ranges using ElasticSearch and Searchkick? -views   1,159



About Opster

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

Find Configuration Errors

Analyze Now