ElasticSearch and doc type

Elastic Stack Elasticsearch
1

I read ElasticSearch online guide but found no information on why
index name and doc type both exist. I wonder if doc type is a way to
separate different indexes but all of them share the same logical
name.

I think that I am wrong because ElasticSearch's /data directory shows
nothing about it. E.x:

/usr/local/es/data/elasticsearch/nodes/0/indices/myindex/0/

Just index name is used to name a directory

Anyone kindly explain it to me?

Thanks

Dinh

2

Index names are different indices. Types are just syntactic sugar to add separation between types of documents. If you know Lucene, type is just a field on a doc.
On Wednesday, April 6, 2011 at 7:33 AM, pcdinh wrote:

I read Elasticsearch online guide but found no information on why
index name and doc type both exist. I wonder if doc type is a way to
separate different indexes but all of them share the same logical
name.

I think that I am wrong because Elasticsearch's /data directory shows
nothing about it. E.x:

/usr/local/es/data/elasticsearch/nodes/0/indices/myindex/0/

Just index name is used to name a directory

Anyone kindly explain it to me?

Thanks

Dinh