+1 I forget to mention it… But he was asking for searching a doc, not getting a doc 
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David Pilato | Technical Advocate | Elasticsearch.com
@dadoonet | @elasticsearchfr
Le 21 février 2014 à 18:03:58, Ivan Brusic (ivan@brusic.com) a écrit:
David has the ideal solution, however just wanted to point out one key difference in the get API is that it would look for a document in the transaction log before it looks in the index. So if you execute a search query after an insert, but before a refresh/flush, you will not see the changes. This scenario depends on each individual use case and settings. Probably a non-issue with the default refresh rate of 1 second and normal search constraints.
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Ivan
On Fri, Feb 21, 2014 at 8:21 AM, David Pilato david@pilato.fr wrote:
I guess that in that case you should index "_id" field (mapping) and run a search on "_id"?
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David Pilato | Technical Advocate | Elasticsearch.com
@dadoonet | @elasticsearchfr
Le 21 février 2014 à 17:04:27, Mohit Anchlia (mohitanchlia@gmail.com) a écrit:
That clears things up. Thanks!
Is there a way to be able to create a doc such that one can find the document with the id and without routing value? May be by using docId as a field in the indexed doc?
On Thu, Feb 20, 2014 at 10:28 PM, David Pilato david@pilato.fr wrote:
Es will route your doc to shard corresponding to routing value 1.
If you search for docA without routing value, 2 options:
You are lucky: hash id A correspond to the same shard as routing value 1: you get the doc
You are not: you won't find the doc.
So, when using routing value at index time, you must give routing value at GET time.
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David 
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 21 févr. 2014 à 04:37, Mohit Anchlia mohitanchlia@gmail.com a écrit :
How does hash algorithm work on 2 variable at the same time? For eg:
- insert a doc with route value 1
- ES creates doc id "A"
- Send a GET for doc id "A" with no routing value - In this case how is ES able to find just one shard since it doesn't have routing value that it can use to find the shard? In other word if doc A was inserted using hash of value 1 then how can it find that one shard when a request comes in with no routing value?
On Thu, Feb 20, 2014 at 6:42 PM, Binh Ly binh@hibalo.com wrote:
Not sure I follow, but if routing is supplied, the routing value will be used to hash to a single shard on which the GET is performed on. If routing is not supplied, the doc ID will be used to hash to a single shard on which the GET is performed on. In either case, 1 shard is used to GET the document.
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and I would be able to do a GET by ID but without a routing value.