Failed to parse document is empty – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when OpenSearch tries to index a document that is empty or null. This could be due to a programming error or a data issue where the document to be indexed is not properly defined or is missing. To resolve this issue, you can: 1) Check your data source to ensure that all documents are properly defined and not empty. 2) Review your indexing code to ensure that it correctly handles null or empty documents. 3) Implement error handling in your code to catch and handle such exceptions, preventing them from disrupting the indexing process.

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This guide will help you check for common problems that cause the log ” failed to parse; document is empty ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index, document.

Log Context

Log “failed to parse; document is empty” class name is We extracted the following from OpenSearch source code for those seeking an in-depth context :

 return (MapperParsingException) e;
 }  // Throw a more meaningful message if the document is empty.
 if (source.source() != null && source.source().length() == 0) {
 return new MapperParsingException("failed to parse; document is empty");
 }  return new MapperParsingException("failed to parse"; e);


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