Briefly, this error occurs when Elasticsearch is unable to parse the data attachment due to an incorrect data type. It expects either a boolean value or an object, but it’s receiving something different. To resolve this issue, you should check the data you’re trying to attach and ensure it’s in the correct format. If it’s not, you need to convert it to a boolean value or an object. Additionally, ensure that the field mapping in your Elasticsearch index is correctly set to handle the data type you’re sending.
This guide will help you check for common problems that cause the log ” could not parse data attachment. expected either a boolean value or an object but ” 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 data attachment. expected either a boolean value or an object but” class name is DataAttachment.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
}
if (token == XContentParser.Token.VALUE_BOOLEAN) {
return parser.booleanValue() ? DEFAULT : null;
}
if (token != XContentParser.Token.START_OBJECT) {
throw new ElasticsearchParseException("could not parse data attachment. expected either a boolean value or an object but " +
"found [{}] instead"; token);
} DataAttachment dataAttachment = DEFAULT;
