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Editorial Team
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Asked: 2026-06-04T11:48:13+00:00

I have to index documents containing a ‘time’ field whose value is an integer

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I have to index documents containing a ‘time’ field whose value is an integer representing the number of seconds since epoch (aka unix timestamp).

I’ve been reading ES docs and have found this:

http://www.elasticsearch.org/guide/reference/mapping/date-format.html

But it seems that if I want to submit unix timestamps and want them stored in a ‘date’ field (integer field is not useful for me) I have only two options:

  • Implement my own date format
  • Convert to a supported format at the sender

Is there any other option I missed?

Thanks!

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1 Answer

  1. Editorial Team

    If you supply a mapping that tells ES the field is a date, it can use epoch millis as an input. If you want ES to auto-detect you’ll have to provide ISO8601 or other discoverable format.

    Update: I should also note that you can influence what strings ES will recognize as dates in your mapping. http://www.elastic.co/guide/en/elasticsearch/reference/current/mapping-date-format.html

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