Briefly, this error occurs when Elasticsearch encounters an unknown field in the JSON object during indexing or querying. This could be due to a typo in the field name or the field not being defined in the mapping. To resolve this issue, you can either correct the field name if it’s a typo, or update the index mapping to include the new field. Alternatively, you can set “ignore_malformed” to true in your index settings to ignore such errors, but this could lead to data loss or incorrect search results.
This guide will help you check for common problems that cause the log ” Unknown object property: [” + fieldName + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: rest, plugin.
Log Context
Log “Unknown object property: [” + fieldName + “]” class name is RestGraphAction.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
} else {
throw new ElasticsearchParseException("Unknown property: [" + fieldName + "]");
}
}
} else {
throw new ElasticsearchParseException("Unknown object property: [" + fieldName + "]");
}
} else {
throw new ElasticsearchParseException("Unknown object property: [" + fieldName + "]");
}
}
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