How to upload data to an existing index with Logstash? - elasticsearch

Question

I am trying to insert data from a .csv-File to an already existing index (that already has data) using Logstash.
Anyway this is my logstash_true.config File:
input {
file {
path => "pathToFile"
start_position => "beginning"
sincedb_path => "/dev/null"
}
}
filter {
csv {
separator => ","
columns => ["title", "text", "subject", "date"]
}
}
output {
stdout { codec => rubydebug }
elasticsearch {
hosts => "127.0.0.1:9200"
index => "news"
document_type => "true_news"
document_id => "%{id}"
}
}
When uploading the data, I can see in the command line that there is nothing wrong with the file or the Data and the document_type true_news actually exist.
But when trying the get the data:
{
"count" : 0,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
}
}
The data wasn't loaded.
UPDATE
when enabling debugging i get the following error:
Could not index event to Elasticsearch. {:status=>400, :action=>
["index", {:_id=>"%{id}", :_index=>"news", :routing=>nil,
:_type=>"true_news"}, #<LogStash::Event:0x7e10d60f>], :response=>
{"index"=>{"_index"=>"news", "_type"=>"true_news", "_id"=>"%{id}",
"status"=>400, "error"=>{"type"=>"illegal_argument_exception",
"reason"=>"Rejecting mapping update to [news] as the final mapping
would have more than 1 type: [fake_news, true_news]"}}}}

Answer 1

Since Elasticsearch version 6.0 you can't have multiple types in your index.
It seems that your index news already have documents or mapping with the type fake_news and you are trying to insert documents with the type true_news, this is not possible, that's why you are getting this error:
"type"=>"illegal_argument_exception",
"reason"=>"Rejecting mapping update to [news] as the final mapping
would have more than 1 type: [fake_news, true_news]"
Since you can have only 1 type and you want to be able to distinguish between true_news and fake_news, it is better to recreate your index to use the default type, doc, for every document, and add a tag with true_news or fake_news to your documents using the config add_tag => ["tag"] in your inpus.