# Possible to change order of key fields with S3 Output plugin?
**URL:** https://discuss.elastic.co/t/possible-to-change-order-of-key-fields-with-s3-output-plugin/221740
**Category:** Logstash
**Created:** [March 2, 2020, 4:52pm UTC](https://discuss.elastic.co/t/possible-to-change-order-of-key-fields-with-s3-output-plugin/221740 "2020-03-02T16:52:33Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@joshuarobinson](https://discuss.elastic.co/u/joshuarobinson)
#### Post date: [March 2, 2020, 4:52pm UTC](https://discuss.elastic.co/t/possible-to-change-order-of-key-fields-with-s3-output-plugin/221740/1 "2020-03-02T16:52:33Z")
Hi,
According to [https://www.elastic.co/guide/en/logstash/current/plugins-outputs-s3.html](https://www.elastic.co/guide/en/logstash/current/plugins-outputs-s3.html), the objects created have a key with uuid _before_ the date field. This makes listing objects by date range far less efficient, for example if I want to use Spark to load just a date range subset.
Is there any way to change the order of the fields in the key prefix so that date is before the uuid?
I.e., I current have objects like this:
**ls.s3.03210fdc-c108-4e7d-8e49-72b614366eab.2020-02-28T04.04.part28.txt**
and I would like to have:
**ls.s3.2020-02-28T04.04.03210fdc-c108-4e7d-8e49-72b614366eab.part28.txt**
thanks in advance for any pointers.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 30, 2020, 4:52pm UTC](https://discuss.elastic.co/t/possible-to-change-order-of-key-fields-with-s3-output-plugin/221740/2 "2020-03-30T16:52:44Z")
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