Start object expected index” + indexName + ” – Elasticsearch Error How To Solve Related Issues

Start object expected index” + indexName + ” – 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 “start object expected index” + indexName + “” 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: repositories, 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”start object expected index[” + indexName + “]”classname  is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

final List snapshotIds = new ArrayList();
  final List gens = new ArrayList();
  IndexId indexId = null;
  if (parser.nextToken() != XContentParser.Token.START_OBJECT) {
  throw new ElasticsearchParseException("start object expected index[" + indexName + "]");
  while (parser.nextToken() != XContentParser.Token.END_OBJECT) {
  final String indexMetaFieldName = parser.currentName();
  if (INDEX_ID.equals(indexMetaFieldName)) {

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 BULK API : Malformed action/metadata line [3], expected START_OBJECT but found [VALUE_STRING] -views 11,126 ,score 10

ElasticsearchParseException: malformed, expected settings to start with 'object', instead was [VALUE_STRING] -views   7,542,score 7

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