# Join two log files using aggregate filter of logstash
**URL:** https://discuss.elastic.co/t/join-two-log-files-using-aggregate-filter-of-logstash/236468
**Category:** Logstash
**Created:** [June 10, 2020, 9:06am UTC](https://discuss.elastic.co/t/join-two-log-files-using-aggregate-filter-of-logstash/236468 "2020-06-10T09:06:09Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Rushabh\_Doshi](https://discuss.elastic.co/u/Rushabh_Doshi)
#### Post date: [June 10, 2020, 9:06am UTC](https://discuss.elastic.co/t/join-two-log-files-using-aggregate-filter-of-logstash/236468/1 "2020-06-10T09:06:09Z")
I have used the below aggregate plugin for logstash to join two log files: Log1: PAGE,PAGEDESCRIPTION
Log 2: PAGE,HTTPAGENT
I WANT THE FINAL OUTPUT in kibana as: PAGE,PAGEDESCRIPTION,HTTPAGENT. The aggregate plugin snippet i used in filter
````auto
task_id => "%{PAGE}"
code => "
map['PAGE'] ||= event.get('PAGE')
map['PAGEDESCRIPTION'] ||= event.get('PAGEDESCRIPTION')
map['HTTPAGENT'] ||= event.get('HTTPAGENT')
#event.cancel()
"
push_previous_map_as_event => true
timeout => 3
}```
But aggregate is not pushing the event to kibana , output in logstash conf file is as below:
output{
elasticsearch {
hosts => ["10.0.62.184:9200"]
index => "%{[@metadata][beat]}-%{+YYYY.MM.dd}"
#document_id => "%{PAGE}"
template_overwrite => true
}
}
May i know what mistake i am doing or am i missing anything here
````
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 8, 2020, 9:06am UTC](https://discuss.elastic.co/t/join-two-log-files-using-aggregate-filter-of-logstash/236468/2 "2020-07-08T09:06:19Z")
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