Error on creation of a mapping for an index

Question

I am trying to change the mapping of an index, but getting an error. Here are the steps I am taking to create the index

• create the index by populating it through a python script

• set the mapping with this code:

  PUT /myidx/orderrow/_mapping {     "orderrow": {         "properties": {             "item_code": {                 "type": "string",                  "index": "not_analyzed"             }         }     } } 

Here's the error message I get:

{    "error": "MergeMappingException[Merge failed with failures {[mapper [item_code] has different index values, mapper [item_code] has different `norms.enabled` values, mapper [item_code] has different tokenize values, mapper [item_code] has different index_analyzer]}]",    "status": 400 } 

Any ideas?

Answer 1

Because you are indexing data first into the index, Elasticsearch is auto-detecting the field type/mapping for your item_code field based on the data being loaded. Then when you attempt to update the mapping, you are getting the error shown above.

I would recommend creating the index and applying the mapping prior to running your Python script to populate the index.

PUT /myproj/  PUT /myproj/orderrow/_mapping  {     "orderrow": {         "properties": {             "item_code": {                 "type": "string",                   "index": "not_analyzed"             }          }      }   } 

Alternately, you can force the conflicting mapping into your index, using the ignore_conflicts option as defined in the merging & conflicts section of the Put Mapping API Documentation. However, I am not sure how that will impact the already indexed documents.