# Timespan filter inside Elasticsearch index
**URL:** https://discuss.elastic.co/t/timespan-filter-inside-elasticsearch-index/104896
**Category:** Elasticsearch
**Created:** [October 23, 2017, 12:41pm UTC](https://discuss.elastic.co/t/timespan-filter-inside-elasticsearch-index/104896 "2017-10-23T12:41:54Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@pkshara](https://discuss.elastic.co/u/pkshara)
#### Post date: [October 23, 2017, 12:41pm UTC](https://discuss.elastic.co/t/timespan-filter-inside-elasticsearch-index/104896/1 "2017-10-23T12:41:54Z")
Hi All,
I have an index called filebeat-\* which gets appended with date everyday when we run the server.
Example apache-2017-10-23,
Now i want to use the filebeat-\* index as input in logstash configuration file and filter based on apache grok patterns and the result would be saved in new index.
My query is , since the logstash will be in nohup mode and it runs continues, will the elasticsearch gets duplicate data ?
TIA
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 20, 2017, 12:42pm UTC](https://discuss.elastic.co/t/timespan-filter-inside-elasticsearch-index/104896/2 "2017-11-20T12:42:27Z")
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