# Create and delete index a few times
for i in {1..4}
do
    curl -XDELETE localhost:9200/test
    curl -XPUT localhost:9200/test -d '{
        "settings": {
            "index.number_of_shards": 1,
            "index.number_of_replicas": 0
        }
    }'
    curl -XPUT localhost:9200/test/doc/1 -d '{"foo": "bar"}'
    curl -XPUT localhost:9200/test/doc/2 -d '{"foo": "bar"}'
    curl -XPUT localhost:9200/test/doc/3 -d '{"foo": "bar"}'
    curl -XPOST localhost:9200/test/_refresh
    # Do search to fill filter cache
    curl "localhost:9200/test/doc/_search"
done
# Sleep for indices.cache.filter.clean_interval
# Reduce it to make this repro run faster
echo
echo "Waiting 1 min for cache to be cleaned"
sleep 60
curl -s -XGET 'http://localhost:9200/_nodes/stats?pretty=true'

...
        "cache" : {
          "filter_count" : -2,
          "filter_evictions" : 3,
          "filter_size" : "-48b",
          "filter_size_in_bytes" : -48,
          "id_cache_size" : "0b",
          "id_cache_size_in_bytes" : 0
        }
...