Expected – How to solve this Elasticsearch error

Expected – 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 ” Expected ” 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: search.

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”Expected [“classname  is SearchSourceBuilder.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

  public void parseXContent(XContentParser parser; boolean checkTrailingTokens) throws IOException {
  XContentParser.Token token = parser.currentToken();
  String currentFieldName = null;
  if (token != XContentParser.Token.START_OBJECT && (token = parser.nextToken()) != XContentParser.Token.START_OBJECT) {
  throw new ParsingException(parser.getTokenLocation(); "Expected [" + XContentParser.Token.START_OBJECT +
  "] but found [" + token + "]"; parser.getTokenLocation());
  while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
  if (token == XContentParser.Token.FIELD_NAME) {
  currentFieldName = parser.currentName();


Run the Check-Up to get a customized report like this:

Analyze your cluster