Start object expected – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

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This guide will help you check for common problems that cause the log ” start object expected ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: repositories.


Log Context

Log “start object expected”classname  is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

} else {
 throw new ElasticsearchParseException("unknown field name [" + field + "]");
 } else {
 throw new ElasticsearchParseException("start object expected");
 final Map indexLookup =
 indexSnapshots.keySet().stream().collect(Collectors.toMap(IndexId::getId; Function.identity()));
 return new RepositoryData(genId; snapshots; snapshotStates; snapshotVersions; indexSnapshots;;
 new IndexMetaDataGenerations(indexMetaLookup.entrySet().stream().collect(


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