How to check document consistent with current mapping?

Elastic Stack Elasticsearch
1

i need to know if document is matching current mapping or not (if not match i need to reindex) .
eg, i change a field analyzer several times by update mapping . i need to know current document index status is identical to the lastest mapping .
but i don't know which api i need to use . thanks .

2

please be more specific what 'consistent' means in your context - the question is impossible to answer otherwise

3

thanks reply , i don't know if someone changed my index's mapping . so i need to know my index need reindex or not . eg , changed the field's analyzer .i just need a api to check like this logic (for each document in index , check if the document is same with the lastest index mapping , if not , i will use update_by_query to update this document )

4

If you updated the mapping (i.e. by adding a field), you could use the exists query... take a look at this example if it helps you

DELETE test

PUT test

PUT test/_doc/1
{ "key" : "value" }

PUT test/_mapping
{
  "properties": {
    "other" : { "type":"text"}
  }
}

PUT test/_doc/2
{ "other" : "value" }

GET test/_search
{
  "query": {
    "bool": {
      "must_not": [
        { "exists": { "field": "other"}}
      ]
    }
  }
}
5

acturally i dont know which mapping setting changed since we in a team develop mode but i need to reindex documents according to latest mapping . but i don't want to reindex them all to save some time . (and i even don't know if the mapping really changed or not) .
for my understanding the mapping is like "class" and the index document is the "object" , i need an api like java 's
"object instanceof class"
....

6

Something like that does not exist, as the concept of instances does not fully map. You could try the above search with any field though.

7

ok thanks

8

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