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Elasticsearch默认映射(Elasticsearch default mapping)

 我目前的理解 -  
 

     
 
  1.  Elasticsearch在第一次接收JSON数据集时创建映射索引。 
    2.  
 
  2.  无法更改此映射，但可以重新映射数据集。 
    3.  

 

 题- 
 

 忘记重新映射。 有没有办法告诉ES 默认行为 - 
 

 "Consider everything that is not a date to be of string type" ？ 
 

 另外，如果我这样做，我会失去很多吗？ 
 

 最新情况： 
 

 我添加了file- config/mappings/_default/mapping.json以及以下内容 - 
 

{
    "dynamic_templates": [
        {
            "template_1": {
                "match": "*",
                "match_mapping_type": "int",
                "mapping": {
                    "type": "string"
                }
            },
            "template_2": {
                "match": "*",
                "match_mapping_type": "long",
                "mapping": {
                    "type": "string"
                }
            }
        }
    ]
}

 

 我也试过放置以下at- config/default_mapping.json 
 

{
    "_default_" : {
        "match": "*",
        "match_mapping_type": "int",
        "mapping": {
                "type": "string"
        }
    }
}

 

 我的“动机”是摆脱int和long类型更改为string出现的错误。 这会将所有 int和long值映射为将来创建的所有索引的string吗？ 我是否需要在_all嵌套此dynamic_templates键？ 
 

 更新II- 
 

 添加此映射文件会导致弹性搜索咳嗽 - 
 

[2014-02-04 10:48:34,396][DEBUG][action.admin.indices.create] [Her] [logstash-2014.02.04] failed to create
org.elasticsearch.index.mapper.MapperParsingException: mapping [mapping.json]
    at org.elasticsearch.cluster.metadata.MetaDataCreateIndexService$2.execute(MetaDataCreateIndexService.java:312)
    at org.elasticsearch.cluster.service.InternalClusterService$UpdateTask.run(InternalClusterService.java:298)
    at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.run(PrioritizedEsThreadPoolExecutor.java:135)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:701)
Caused by: java.lang.ClassCastException: java.util.ArrayList cannot be cast to java.util.Map
    at org.elasticsearch.index.mapper.DocumentMapperParser.extractMapping(DocumentMapperParser.java:268)
    at org.elasticsearch.index.mapper.DocumentMapperParser.parse(DocumentMapperParser.java:155)
    at org.elasticsearch.index.mapper.MapperService.parse(MapperService.java:314)
    at org.elasticsearch.index.mapper.MapperService.merge(MapperService.java:193)
    at org.elasticsearch.cluster.metadata.MetaDataCreateIndexService$2.execute(MetaDataCreateIndexService.java:309)
    ... 5 more
2014-02-04 10:48:34 +0000 [warn]: temporarily failed to flush the buffer. next_retry=2014-02-04 10:48:33 +0000 error_class="Net::HTTPServerException" error="400 \"Bad Request\"" instance=17509700


My current understanding-
 

     
 
  1. Elasticsearch creates the mapping indices the first time it receives the JSON datasets.
    2.  
 
  2. This mapping cannot be changed, but the datasets can be re-mapped.
    3.  

 

Question-
 

Forget re-mapping. Is there any way to tell ES to behave by default as-
 

"Consider everything that is not a date to be of string type"?
 

Also, will i be losing out on much if i do this?
 

Update-
 

i added the file- config/mappings/_default/mapping.json with the following contents-
 

{
    "dynamic_templates": [
        {
            "template_1": {
                "match": "*",
                "match_mapping_type": "int",
                "mapping": {
                    "type": "string"
                }
            },
            "template_2": {
                "match": "*",
                "match_mapping_type": "long",
                "mapping": {
                    "type": "string"
                }
            }
        }
    ]
}

 

i also tried placing the following at- config/default_mapping.json
 

{
    "_default_" : {
        "match": "*",
        "match_mapping_type": "int",
        "mapping": {
                "type": "string"
        }
    }
}

 

My 'motive' is to get rid of errors that crop up if int and long types change to string. Will this map all int and long values as string across all indexes that are created in the future? Do i need to nest this dynamic_templates key within _all?
 

Update II-
 

Adding this mapping file causes elasticsearch to cough up-
 

[2014-02-04 10:48:34,396][DEBUG][action.admin.indices.create] [Her] [logstash-2014.02.04] failed to create
org.elasticsearch.index.mapper.MapperParsingException: mapping [mapping.json]
    at org.elasticsearch.cluster.metadata.MetaDataCreateIndexService$2.execute(MetaDataCreateIndexService.java:312)
    at org.elasticsearch.cluster.service.InternalClusterService$UpdateTask.run(InternalClusterService.java:298)
    at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.run(PrioritizedEsThreadPoolExecutor.java:135)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:701)
Caused by: java.lang.ClassCastException: java.util.ArrayList cannot be cast to java.util.Map
    at org.elasticsearch.index.mapper.DocumentMapperParser.extractMapping(DocumentMapperParser.java:268)
    at org.elasticsearch.index.mapper.DocumentMapperParser.parse(DocumentMapperParser.java:155)
    at org.elasticsearch.index.mapper.MapperService.parse(MapperService.java:314)
    at org.elasticsearch.index.mapper.MapperService.merge(MapperService.java:193)
    at org.elasticsearch.cluster.metadata.MetaDataCreateIndexService$2.execute(MetaDataCreateIndexService.java:309)
    ... 5 more
2014-02-04 10:48:34 +0000 [warn]: temporarily failed to flush the buffer. next_retry=2014-02-04 10:48:33 +0000 error_class="Net::HTTPServerException" error="400 \"Bad Request\"" instance=17509700


原文：https://stackoverflow.com/questions/21544527
更新时间：2023-12-09 17:12

最满意答案

 尝试 
 

$('#table tbody td').click(function (event) {
    var th = $('#users-table th').eq($(this).index());
    if (th.text() != 'no action') {
        if (event.target.type !== 'checkbox') {
            $(this).closest('tr').find(':checkbox').prop('checked', function (i, checked) {
                return !checked;
            })
        }
    }
});

 

 演示： 小提琴 
 

 

 但您可以使用事件委派模型跳过第3列中的单击事件 
 

$('#table tbody').on('click', 'td:not(:nth-child(3))', function (event) {
    if (event.target.type !== 'checkbox') {
        $(this).closest('tr').find(':checkbox').prop('checked', function (i, checked) {
            return !checked;
        })
    }
});

 

 演示： 小提琴 

Try
 

$('#table tbody td').click(function (event) {
    var th = $('#users-table th').eq($(this).index());
    if (th.text() != 'no action') {
        if (event.target.type !== 'checkbox') {
            $(this).closest('tr').find(':checkbox').prop('checked', function (i, checked) {
                return !checked;
            })
        }
    }
});

 

Demo: Fiddle
 

 

But you can use event delegation model to skip the click event in the 3rd columnd
 

$('#table tbody').on('click', 'td:not(:nth-child(3))', function (event) {
    if (event.target.type !== 'checkbox') {
        $(this).closest('tr').find(':checkbox').prop('checked', function (i, checked) {
            return !checked;
        })
    }
});

 

Demo: Fiddle

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