Meta values can only be strings; but got – Elasticsearch Error How To Solve Related Issues



Meta values can only be strings; but got – 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 “meta values can only be strings; but got” 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: index.


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”[meta] values can only be strings; but got”classname  is TypeParsers.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

"] for field [" + name + "]");
  }
  } else if (value == null) {
  throw new MapperParsingException("[meta] values can't be null (field [" + name + "])");
  } else {
  throw new MapperParsingException("[meta] values can only be strings; but got " +
  value.getClass().getSimpleName() + "[" + value + "] for field [" + name + "]");
  }
  }
  final Function; Object> entryValueFunction = Map.Entry::getValue;
  final Function stringCast = String.class::cast;

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 : Expected numeric type on field -views 6,208 ,score 3

Merging dynamic field with type date/string triggered conflict -views   1,809,score 1



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