How to get auto increment id for elasticsearch

Question

I need to store the unique auto increment id together with the rest of the fields in my document in ElasticSearch. Is there anyway in ElasticSearch to obtain them.

I found this as a potential solution: http://blogs.perl.org/users/clinton_gormley/2011/10/elasticsearchsequence---a-blazing-fast-ticket-server.html

But I just wonder is there any better way?

Answer 1

The 1.x reference document API says that you can leave off an id and it will be automatically generated. Use POST instead of put and the op_type will automatically be set to create.

https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-index_.html#_automatic_id_generation

Answer 2

Here's another way to use elasticsearch to create iids:

The main advantage is that the iid can be backed up with simple dumps where an implementation using the _version of elasticsearch is not able to back up the version.

It allows to request a bulk of iids to minimize the number of requests needed.

A request to get a bulk of 10 iids would look like this:

curl -XPOST "http://localhost:9200/sequence/sequence/1/_updatefields=iid&retry_on_conflict=5" -d '{   "script": "ctx._source.iid += bulk_size",   "params": {     "bulk_size": 10   },   "lang": "groovy",   "upsert": {     "iid": 0   } }' 

It needs this (optimised) mapping for the index:

curl -XPOST http://localhost:9200/sequence/_mapping -d '{   "settings": {     "number_of_shards": 1,     "auto_expand_replicas": "0-all"   },   "mappings": {     "sequence": {       "_all": {         "enabled": 0       },       "_type": {         "index": "no"       },       "dynamic": "strict",       "properties": {         "iid": {           "type": "string",           "index": "no"         }       }     }   } }' 

A more detailed description can be found here: