Briefly, this error occurs when the year day value provided in the Elasticsearch query is invalid. This could be due to incorrect data type or format. Elasticsearch expects a string or number value for the year day field. To resolve this issue, ensure that the year day value is correctly formatted and of the right data type. Also, check your query syntax to ensure it’s correct. If the error persists, consider re-indexing your data to ensure all date fields are correctly mapped.
This guide will help you check for common problems that cause the log ” invalid year day value for [{}] field. expected string/number value or an ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log “invalid year day value for [{}] field. expected string/number value or an” class name is YearTimes.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :
} else if (token == XContentParser.Token.START_ARRAY) {
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
daysSet.add(MonthTimes.parseDayValue(parser; token));
}
} else {
throw new ElasticsearchParseException("invalid year day value for [{}] field. expected string/number value or an " +
"array of string/number values; but found [{}]"; currentFieldName; token);
}
} else if (TIME_FIELD.match(currentFieldName; parser.getDeprecationHandler())) {
if (token != XContentParser.Token.START_ARRAY) {
try {
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