Create or update mapping in elasticsearch

Question

I am new to Elasticsearch and am currently working on implementing a geo distance filter for searching  As of now my index has the following mapping  I ve removed some fields      advert index       mappings          advert type             properties                  v                   type   long                             caption                   type   string                             category                   type   string                               location                type   long                                                The geo distance field is going to be implemented on the location field  where an example instance looks like this     location                    71                 60                  I e  is on geoJSON format  lon  lat     I understand that I will have to update my index so that the location field is of type geo point  as described in the documentation  mapping-geo-point   It seems like I have to drop the index and create a new one  but I am not able to do this    Am I on the right track  I would greatly appreciate it if anyone could help me with how I could create a new index or update my existing one with the correct data type    Many thanks

User · Answer

Please note that there is a mistake in the url provided in this answer:

For a PUT mapping request: the url should be as follows:

http://localhost:9200/name_of_index/_mappings/document_type

and NOT

http://localhost:9200/name_of_index/document_type/_mappings

User · Answer

In later Elasticsearch versions  7 x   types were removed  Updating a mapping can becomes   curl -XPUT  http   localhost 9200 test  mapping  -H  Content-Type  application json  -d      properties          new geo field            type    geo point                 As others have pointed out  if the field exists  you typically have to reindex  There are exceptions  such as adding a new sub-field or changing analysis settings   You can t  create a mapping   as the mapping is created with the index  Typically  you d define the mapping when creating the index  or via index templates    curl -XPUT  http   localhost 9200 test  -H  Content-Type  application json  -d      mappings          properties            foo field              type    text                         That s because  in production at least  you d want to avoid letting Elasticsearch  guess  new fields  Which is what generated this question  geo data was read as an array of long values

User · Answer

Generally speaking  you can update your index mapping using the put mapping api  reference here     curl -XPUT  http   localhost 9200 advert index  mapping advert type  -d          advert type               properties                   your new mapping properties                        It s especially useful for adding new fields  However  in your case  you will try to change the location type  which will cause a conflict and prevent the new mapping from being used   You could use the put mapping api to add another property containing the location as a lat lon array  but you won t be able to update the previous location field itself   Finally  you will have to reindex your data for your new mapping to be taken into account   The best solution would really be to create a new index   If your problem with creating another index is downtime  you should take a look at aliases to make things go smoothly

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