Unknown array – Elasticsearch Error How To Solve Related Issues


Unknown array – Elasticsearch Error How To Solve Related Issues

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 ” unknown array ” 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: blobstore and 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 pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

Log”unknown array [{}]”classname  is BlobStoreIndexShardSnapshots.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

}
  String currentFieldName = parser.currentName();
  token = parser.nextToken();
  if (token == XContentParser.Token.START_ARRAY) {
  if (ParseFields.FILES.match(currentFieldName; parser.getDeprecationHandler()) == false) {
  throw new ElasticsearchParseException("unknown array [{}]"; currentFieldName);
  }
  while (parser.nextToken() != XContentParser.Token.END_ARRAY) {
  FileInfo fileInfo = FileInfo.fromXContent(parser);
  files.put(fileInfo.name(); fileInfo);
  }

 

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