Value must be of type String: ” + parameterName + ” – Elasticsearch Error How To Solve Related Issues



Value must be of type String: ” + parameterName + ” – 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 “Value must be of type String: ” + parameterName + “” 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: reindex, 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”Value must be of type String: [” + parameterName + “]”classname  is RestUpdateByQueryAction.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

Object parameterValue = entry.getValue();
  if (Script.LANG_PARSE_FIELD.match(parameterName; LoggingDeprecationHandler.INSTANCE)) {
  if (parameterValue instanceof String || parameterValue == null) {
  lang = (String) parameterValue;
  } else {
  throw new ElasticsearchParseException("Value must be of type String: [" + parameterName + "]");
  }
  } else if (Script.PARAMS_PARSE_FIELD.match(parameterName; LoggingDeprecationHandler.INSTANCE)) {
  if (parameterValue instanceof Map || parameterValue == null) {
  params = (Map) parameterValue;
  } else {

 

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 How to resolve Value cannot be null. Parameter name: source in linq? -views 196,376 ,score 35

The type 'string' must be a non-nullable type in order to use it as parameter T in the generic type or method 'System.Nullable<T>' -views   139,682,score 171

 

 

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