Expected hexadecimal at offset; found – Elasticsearch Error How To Solve Related Issues



Expected hexadecimal at offset; found – 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 “expected hexadecimal at offset; found” 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: parser, plugin.


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”{}expected hexadecimal at offset[{}]; found [{}]”classname  is ExpressionBuilder.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

} else if (pos > i) {
  break;
  }
  }
  if (inspect && HEXA.indexOf(lowerCase.charAt(i)) 

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 What are invalid characters in XML -views 615,049 ,score 228

How can I convert a Unix timestamp to DateTime and vice versa? -views   605,656,score 761



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