压缩配置：
index.codec: best_compression

合并索引：
curl –XPOST localhost:9200/hec_test3/_forcemerge’

配置mapping：
curl -XPUT 'http://localhost:9200/hec_test3' -d '
{
  "mappings": {
    "hec_type3": {
            "_source": {
                "enabled": false
            }, "_all": {
                "enabled": false
            }, "properties": {
                “fieldxxx": {
                    "type": "string",
                    “norms”: {“enabled”: false},
                    “store”: false,
                    "doc_values": false, "index_options": "docs"
                }, ….
            }
        }      
  }
}
'