We are having one ELK setup and logs from various sources like apache, nginx, system messages etc are processed. We keep the ES data for 1 month and dump the rest to s3 bucket. For analysing the history data we need to again restore the content of s3 to elasticsearch. Now I want to integrate ELK with hadoop so that we can see the old data in kibana. I heard of elasticsearch-hadoop. Can anybody plz help how to dump all data to hadoop via elasticsearch and vice versa?