带有父子文档的弹性搜索问题

Question

项目和插槽,其中项目槽中文件的父母:我们有两种类型的弹性搜索(ES)的文档.我们使用以下命令定义索引:

curl -XPOST 'localhost:9200/items' -d @itemsdef.json

哪里itemsdef.json有以下定义

{
"mappings" : {
    "item" : {
        "properties" : {
            "id" : {"type" : "long" },
            "name" : {
                "type" : "string",
                "_analyzer" : "textIndexAnalyzer"   
            },
            "location" : {"type" : "geo_point" },
        }
    }
},
"settings" : {
    "analysis" : {
        "analyzer" : {

                "activityIndexAnalyzer" : {
                    "alias" : ["activityQueryAnalyzer"],
                    "type" : "custom",
                    "tokenizer" : "whitespace",
                    "filter" : ["trim", "lowercase", "asciifolding", "spanish_stop", "spanish_synonym"]
                },
                "textIndexAnalyzer" : {
                    "type" : "custom",
                    "tokenizer" : "whitespace",
                    "filter" : ["word_delimiter_impl", "trim", "lowercase", "asciifolding", "spanish_stop", "spanish_synonym"]
                },
                "textQueryAnalyzer" : {
                    "type" : "custom",
                    "tokenizer" : "whitespace",
                    "filter" : ["trim", "lowercase", "asciifolding", "spanish_stop"]
                }       
        },
        "filter" : {        
                "spanish_stop" : {
                    "type" : "stop",
                    "ignore_case" : true,
                    "enable_position_increments" : true,
                    "stopwords_path" : "analysis/spanish-stopwords.txt"
                },
                "spanish_synonym" : {
                    "type" : "synonym",
                    "synonyms_path" : "analysis/spanish-synonyms.txt"
                },
                "word_delimiter_impl" : {
                    "type" : "word_delimiter",
                    "generate_word_parts" : true,
                    "generate_number_parts" : true,
                    "catenate_words" : true,
                    "catenate_numbers" : true,
                    "split_on_case_change" : false                  
                }               
        }
    }
}
}

然后我们使用以下命令添加子文档定义:

curl -XPOST 'localhost:9200/items/slot/_mapping' -d @slotsdef.json

哪里slotsdef.json有以下定义:

{
"slot" : {
    "_parent" : {"type" : "item"},
    "_routing" : {
        "required" : true,
        "path" : "parent_id"
    },
    "properties": {
        "id" : { "type" : "long" },
        "parent_id" : { "type" : "long" },
        "activity" : {
            "type" : "string",
            "_analyzer" : "activityIndexAnalyzer"
        },
        "day" : { "type" : "integer" },
        "start" : { "type" : "integer" },
        "end" :  { "type" : "integer" }
    }
}   
}

最后,我们使用以下命令执行批量索引:

curl -XPOST 'localhost:9200/items/_bulk' --data-binary @testbulk.json

testbulk.json保存以下数据:

{"index":{"_type": "item", "_id":35}}
{"location":[40.4,-3.6],"id":35,"name":"A Name"}
{"index":{"_type":"slot","_id":126,"_parent":35}}
{"id":126,"start":1330,"day":1,"end":1730,"activity":"An Activity","parent_id":35}

我们通过ES Head插件看到定义似乎没问题.我们测试分析仪以检查它们是否已加载并且它们有效.这两个文档都显示在ES Head浏览器视图中.但是如果我们尝试使用API​​检索子项,ES会回复它不存在:

$ curl -XGET 'localhost:9200/items/slot/126'
{"_index":"items","_type":"slot","_id":"126","exists":false}

当我们导入50个文档,所有父文档可以通过API进行检索,但只有一些子元素的请求获得成功响应.

我的猜测是,它可能是与文档的存储方式跨越碎片和路由......这肯定是我不明白它是如何工作的.

有关如何检索单个子文档的任何线索？ES Head显示它们已存储但HTTP GET到localhost:9200/items/slot/XXX随机响应"exists":false.

Answer 1

子文档使用父标识进行路由.因此,为了检索子文档,您需要在查询的routing参数中指定父ID:

curl "localhost:9200/items/slot/126?routing=35"

如果父ID不可用,则必须搜索子文档:

curl "localhost:9200/items/slot/_search?q=id:126"

或切换到具有单个分片的索引.