Hit failed to parse _source – Elasticsearch Error How To Solve Related Issues

Hit failed to parse _source – 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 “hit failed to parse _source” 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”[hit] failed to parse [_source]”classname  is RemoteResponseParsers.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

  // a hack but this lets us get the right xcontent type to go with the source
  return new Tuple(BytesReference.bytes(b); s);
  } catch (IOException e) {
  throw new ParsingException(p.getTokenLocation(); "[hit] failed to parse [_source]"; e);
  }; new ParseField("_source"));
  ParseField routingField = new ParseField("_routing");
  ParseField ttlField = new ParseField("_ttl");
  ParseField parentField = new ParseField("_parent");

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 ElasticSearch – failed to parse search source. expected field name but got [START_OBJECT] -views 8,785 ,score 3

Elasticsearch query to retrieve particular _source value for a particular type for all ID's -views   745

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