Elasticsearch-索引设置settings

快来打我* 2023-06-21 12:27 2阅读 0赞

# 前言 #

本文基于elasticsearch7.3.0版本  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI4OTg4OTY5_size_16_color_FFFFFF_t_70]

# settings主要设置 #

settings部分主要包括:分片数,副本数,刷新间隔,分析器

PUT index_test
    { 
        "settings":{ 
        	// 设置索引分片数,默认为1,只能在创建索引时设置,之后任何时候都不能修改
        	"number_of_shards": 3,
        	// 设置索引分片副本数,默认为1,之后可以任意修改
        	"number_of_replicas": 1,
        	// 刷新间隔,默认1s,近实时,文档从索引到可以被检索中间间隔就是这个值
        	"refresh_interval": "1s",
        	// 分析器
            "analysis":{ 
                "analyzer":{ 
                	// 自定义分析器
                    "ik_pinyin_analyzer":{ 
                        "type":"custom",
                        "char_filter":[
                            "emoticons"
                        ],
                        "tokenizer":"ik_max_word",
                        "filter":[
                            "pinyin_filter"
                        ]
                    }
                },
                // 字符过滤器
                "char_filter":{ 
                    "emoticons":{ 
                        "type":"mapping",
                        "mappings":[
                            ":) => _happy_",
                            ":( => _sad_"
                        ]
                    }
                },
                // 分词器
                "tokenizer":{ 
                    "punctuation":{ 
                        "type":"pattern",
                        "pattern":"[ .,!?]"
                    }
                },
                // token过滤器
                "filter":{ 
                    "pinyin_filter":{ 
                        "type":"pinyin",
                        "keep_original":true
                    }
                }
            }
        }
    }

# 查看索引settings #

# 请求
    GET index_test/_settings
    
    # 响应
    { 
      "index_test" : { 
        "settings" : { 
          "index" : { 
            "refresh_interval" : "1s",
            "number_of_shards" : "3",
            "provided_name" : "index_test",
            "creation_date" : "1576394655937",
            "analysis" : { 
              "filter" : { 
                "pinyin_filter" : { 
                  "type" : "pinyin",
                  "keep_original" : "true"
                }
              },
              "char_filter" : { 
                "emoticons" : { 
                  "type" : "mapping",
                  "mappings" : [
                    ":) => _happy_",
                    ":( => _sad_"
                  ]
                }
              },
              "analyzer" : { 
                "ik_pinyin_analyzer" : { 
                  "filter" : [
                    "pinyin_filter"
                  ],
                  "char_filter" : [
                    "emoticons"
                  ],
                  "type" : "custom",
                  "tokenizer" : "ik_max_word"
                }
              },
              "tokenizer" : { 
                "punctuation" : { 
                  "pattern" : "[ .,!?]",
                  "type" : "pattern"
                }
              }
            },
            "number_of_replicas" : "1",
            "uuid" : "xJZY4_EeQqm5_0ooTW2Pbw",
            "version" : { 
              "created" : "7030099"
            }
          }
        }
      }
    }

# 动态修改索引副本数 #

PUT index_test/_settings
    { 
      "number_of_replicas": 2
    }

# 修改刷新时间 #

PUT index_test/_settings
    {
      "settings": {
        "index": {
          "refresh_interval":"30s"
        }
      }
    }

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