转载自 https://blog.csdn.net/liukuan73/article/details/79261125
http://nocf-www.elastic.co/guide/en/elasticsearch/reference/current/indices-create-index.html
https://yq.aliyun.com/articles/38285
http://www.mamicode.com/info-detail-1570228.html
http://technote.xiaoxingmi.com/2014/11/13/elasticsearch%E6%80%A7%E8%83%BD%E8%B0%83%E4%BC%98%E8%AE%BE%E7%BD%AE%E9%A1%B9%EF%BC%9A%E9%98%B2%E6%AD%A2%E8%BF%9B%E7%A8%8B%E5%86%85%E5%AD%98%E8%A2%ABswap-out/
http://rockelixir.iteye.com/blog/1888717
http://blog.csdn.net/fbfsber008/article/details/55270759
http://1358440610-qq-com.iteye.com/blog/2336072
https://www.v2ex.com/t/411036
http://blog.51cto.com/tchuairen/1861603
http://www.infoq.com/cn/news/2017/01/ElasticSearch-9
http://blog.csdn.net/jiao_fuyou/article/details/50501717
https://www.elastic.co/guide/cn/elasticsearch/guide/current/overallocation.html
https://www.elastic.co/guide/cn/elasticsearch/guide/current/replica-shards.html
https://www.elastic.co/blog/found-understanding-memory-pressure-indicator
http://blog.csdn.net/iorichang/article/details/53840824
http://blog.csdn.net/ZYC88888/article/details/78373066?locationNum=4&fps=1