Change document data while reindexing documents

Elastic Stack Elasticsearch
1

i'd like to know if there is a way to ignore some fields that contains specifics values while reindexing

2

Hi,

In other words you want to remove fields in the target index which are in the source index? While I haven't tried it out I guess this is what you want:

POST _reindex
{
  "source": {
    "index": "twitter",
    "_source": ["user", "_doc"]
  },
  "dest": {
    "index": "new_twitter"
  }
}

_source
(Optional, string) If true reindexes all source fields. Set to a list to reindex select fields. Defaults to true .

Best regards
Wolfram

3

Hi ,
i want to ignore fields based on their value , for example if date field has a specific value in the source index i'd like to put a new value for the date in the target index

4

Hi,

If you want to do that based on the value this is not the correct way for you. Instead, you can use a script to modify the documents before writing them to the new index:
https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-reindex.html#reindex-scripts

Best regards
Wolfram

1 Like
5

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