Elasticsearch映射-重命名现有字段 [英] Elasticsearch Mapping - Rename existing field

问题描述

无论如何，是否可以在现有的Elasticsearch映射中重命名一个元素而不必添加新元素？
如果是这样，为了避免破坏现有的映射，最好的方法是什么？

Is there anyway I can rename an element in an existing elasticsearch mapping without having to add a new element ? If so whats the best way to do it in order to avoid breaking the existing mapping?

例如从fieldCamelcase到fieldCamelCase

e.g. from fieldCamelcase to fieldCamelCase

{
    "myType": {
        "properties": {
            "timestamp": {
                "type": "date",
                "format": "date_optional_time"
            },
            "fieldCamelcase": {
                "type": "string",
                "index": "not_analyzed"
            },
            "field_test": {
                "type": "double"
            }
        }
    }
}

推荐答案

您可以通过创建摄取管道，其中包含重命名处理器与重新索引API 。

You could do this by creating an Ingest pipeline, that contains a Rename Processor in combination with the Reindex API.

PUT _ingest/pipeline/my_rename_pipeline
{
  "description" : "describe pipeline",
  "processors" : [
    {
      "rename": {
        "field": "fieldCamelcase",
        "target_field": "fieldCamelCase"
      }
    }
  ]
}

POST _reindex
{
  "source": {
    "index": "source"
  },
  "dest": {
    "index": "dest",
    "pipeline": "my_rename_pipeline"
  }
} 

请注意，您需要运行Elasticsearch 5.x才能使用摄取。如果您正在跑步< 5.x，则必须使用@Val在他的评论中提到的内容：）

Note that you need to be running Elasticsearch 5.x in order to use ingest. If you're running < 5.x then you'll have to go with what @Val mentioned in his comment :)

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