elasticsearch routing 적용하기

Reference URL

• http://www.elasticsearch.org/guide/reference/mapping/routing-field.html
• https://groups.google.com/forum/?fromgroups=#!searchin/elasticsearch/data$20flow/elasticsearch/49q-_AgQCp8/MRol0t9asEcJ
• http://elasticsearch-users.115913.n3.nabble.com/Figuring-out-the-optimal-number-of-shards-td3092440.html
• http://elasticsearch-users.115913.n3.nabble.com/When-Why-to-use-Routing-for-indexing-searching-td3789570.html
• http://www.slideshare.net/kucrafal/scaling-massive-elastic-search-clusters-rafa-ku-sematext
• http://blog.sematext.com/2012/05/29/elasticsearch-shard-placement-control/
• http://ajohnstone.com/achives/elastic-search-presentation/
• https://github.com/elasticsearch/elasticsearch/issues/2325

Routing 이란?

▷   - 색인 시 특정 shard 로 색인을 하고, 검색 시 지정된 shard 로만 검색 할 수 있도록 지원   - 색인 field 중 unique key 에 해당하는 값을 가지고 routing path 를 지정   - 검색 시 지정한 path 를 query 에 주어 분산된 indices 를 모두 검색 하지 않고 지정된 indices 만 검색   - routing field 는 store yes, index not_analyzed 로 설정 되어야 함     - 기본 설정         "routing" : {             "required" : true,             "path" : "test.user_uniq_id"         }

Routing 설정하기

▷   - index 생성 시 routing 설정을 포함 시켜 생성 (replica 1, shards 50) curl -XPUT 'http://localhost:9200/index0' -d '{     "settings" : {         "number_of_shards" : 50,         "number_of_replicas" : 1,         "index" : {             "analysis" : {                 "analyzer" : {                     "kr_analyzer" : {                         "type" : "custom",                         "tokenizer" : "kr_tokenizer",                         "filter" : ["trim", "kr_filter", "kr_synonym"]                     },                     "kr_analyzer" : {                         "type" : "custom",                         "tokenizer" : "kr_tokenizer",                         "filter" : ["trim", "kr_filter", "kr_synonym"]                     }                 },                 "filter" : {                     "kr_synonym" : {                         "type" : "synonym",                         "synonyms_path" : "analysis/synonym.txt"                     }                 }             }         },         "routing" : {             "required" : true,             "path" : "test.user_uniq_id"         }     },     "mappings" : {         "test" : {             "properties" : {                 "docid" : { "type" : "string", "store" : "yes", "index" : "not_analyzed"},                 "title" : { "type" : "string", "store" : "yes", "index" : "analyzed", "term_vector" : "yes", "analyzer" : "kr_analyzer" },                 "user_uniq_id" : { "type" : "string", "store" : "yes", "index" : "not_analyzed" },                 "ymdt" : { "type" : "date", "format" : "yyyyMMddHHmmss", "store" : "yes", "index" : "not_analyzed" }                 }             }         }     } }'     - document 색인 시 setRouting 설정을 해줘야 정상 동작 함     IndexRequestBuilder requestBuilder = client.prepareIndex(indexName, indexType);     requestBuilder.setId(docId);     requestBuilder.setRouting(docMeta.getUserUniqId());     requestBuilder.setSource(jsonBuilder);

routing search query uri

▷   - http://localhost:9200/index0/_search?source={"query":{"bool":{"must":[{"term":{"user_uniq_id":"honggildong@elastic.com"}}],"must_not":[],"should":[]}},"from":0,"size":50,"sort":[{"ymdt":"asc"}],"facets":{}}&routing=honggildong@elastic.com&pretty=true