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  1. Create New index with correct mapping

    Code Block
    languagejson
    PUT /INDEX_COPY
    {
        "mappings" : {
            "properties" : {            
        "id": {
          "type": "keyword",
          "ignore_above": 256
        },
        "actor": {
          "properties": {
            "group": {
              "type": "keyword",
              "ignore_above": 256
            },
            "id": {
              "type": "keyword",
              "ignore_above": 256
            },
            "name": {
              "type": "keyword",
              "ignore_above": 256
            }
          }
        },
        "description": {
          "type": "text"
        },
        "app": {
          "properties": {
            "build": {
              "type": "keyword",
              "ignore_above": 256
            },
            "name": {
              "type": "keyword",
              "ignore_above": 256
            },
            "server": {
              "type": "keyword",
              "ignore_above": 256
            },
            "stage": {
              "type": "keyword",
              "ignore_above": 256
            },
            "version": {
              "type": "keyword",
              "ignore_above": 256
            }
          }
        },
        "entity": {
          "properties": {
            "group": {
              "type": "keyword",
              "ignore_above": 256
            },
            "id": {
              "type": "keyword",
              "ignore_above": 256
            },
            "name": {
              "type": "keyword",
              "ignore_above": 256
            }
          }
        },
        "changes": {
          "type": "nested",
          "properties": {
            "name": {
              "type": "keyword",
              "ignore_above": 256
            },
            "created": {
              "type": "date",
              "format": "yyyy-MM-dd HH:mm:ss||yyyy-MM-dd"
            },
            "ip": {
              "type": "keyword",
              "ignore_above": 256
            },
            "groupId":
              {
                "type": "keyword",
                "ignore_above": 256
              },
            "groupName": {
              "type": "keyword",
              "ignore_above": 256
            },
            "newValue": {
              "type": "text",
              "fields": {
                "keyword": {
                  "type": "keyword",
                  "ignore_above": 256
                }
              }
            },
            "oldValue": {
              "type": "text",
              "fields": {
                "keyword": {
                  "type": "keyword",
                  "ignore_above": 256
                }
              }
            }
          }
        },
        "request": {
          "properties": {
            "ip": {
              "type": "keyword",
              "ignore_above": 256
            },
            "timestamp": {
              "type": "date"
            }
          }
        }
            }
        }
    }
  2. Move data from old index to copy

    Code Block
    POST _reindex
    {
      "source": {
        "index": "INDEX_NAME"
      },
      "dest": {
        "index": "INDEX_COPY"
      }
    }
  3. Remove old index

    Code Block
    DELETE /INDEX_NAME
  4. Assign original index name as alias to new index with correct mapping

    Code Block
    POST /_aliases
    {
        "actions" : [
            { "add" : { "index" : "INDEX_COPY", "alias" : "INDEX_NAME" } }
        ]
    }