Briefly, this error occurs when Elasticsearch encounters an unexpected field while parsing a message attachment. This could be due to incorrect data format or a mismatch between the data and the mapping. To resolve this issue, you can: 1) Check the data format and ensure it matches the expected format. 2) Review the mapping for the index and ensure it aligns with the data. 3) If the unexpected field is not necessary, consider removing it from the data. 4) If the field is necessary, update the mapping to include this field.
This guide will help you check for common problems that cause the log ” could not parse message attachment field. unexpected field [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log “could not parse message attachment field. unexpected field [{}]” class name is Attachment.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
} else if (XField.ACTIONS.match(currentFieldName; parser.getDeprecationHandler())) {
if (token == XContentParser.Token.START_OBJECT) {
actions.add(Action.ACTION_PARSER.parse(parser; null));
}
} else {
throw new ElasticsearchParseException("could not parse message attachment field. unexpected field [{}]";
currentFieldName);
}
}
if (authorName == null) {
if (authorLink != null) {
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