Hello All,
I have a requirement to ingest only the data which already exists in another index. For example I have a index in ES like index1 =[source=a,time=b,value=c,id=d] and data set to be ingested like sample=[value=c,value=d].
I wanted to ingest only value=c data to ES via logstash since that is also present in index1.
Is there any filter which checks for a for a field value or any other ways exists to achieve this?