I see following exception es.deprecation.log. I see that this question was answered earlier other thread, but, it has less explanation.
[WARN ][o.e.d.s.f.s.DocValueFieldsFetchSubPhase] Doc-value field [@timestamp] is not using a format. The output will change in 7.0 when doc value fields get formatted based on mappings by default. It is recommended to pass [format=use_field_mapping] with the doc value field in order to opt in for the future behaviour and ease the migration to 7.0.
- I was trying to understand, what format of timestamp we need to use to write to elasticsearch to avoid this issue ?
- Earlier post suggests that to suppress the warnings, but I was trying to format the date.
Could you please advise on this?