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.


--
David ;-)
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs


Le 21 févr. 2014 à 04:37, Mohit Anchlia <[email protected]> a écrit :

How does hash algorithm work on 2 variable at the same time? For eg:
 
1) insert a doc with route value 1
2) ES creates doc id "A"
3) 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 <[email protected]> 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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