Meta values can’t be null (field ” + name + “) – How to solve this Elasticsearch error

Meta values can’t be null (field ” + name + “) – How to solve this Elasticsearch error

Opster Team

July-20, 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 that cause many errors.

This guide will help you check for common problems that cause the log ” meta values can’t be null (field ” + name + “) ” 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 pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

Log”[meta] values can’t be null (field [” + name + “])”classname  is TypeParsers.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (sValue.codePointCount(0; sValue.length()) > 50) {
  throw new MapperParsingException("[meta] values can't be longer than 50 chars; but got [" + value +
  "] 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 + "]");
  }
  }

Run the Check-Up to get customized recommendations like this:

checklist Run Check-Up

error

Heavy merges detected in specific nodes

error-img

Description

A large number of small shards can slow down searches and cause cluster instability. Some indices have shards that are too small…

error-img

Recommendations Based on your specific ES deployment you should…

Based on your specific ES deployment you should…

1

X-PUT curl -H [a customized recommendation]

 

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