Best and efficient way to find out whether set of records available in Solr

[M, Arjun (Nokia - IN/Bangalore)]

Hi,

        I have an use case where I need to find out whether a set of records 
are available in Solr. Please suggest best and efficient way to achieve it. Any 
suggestions are appreciated.

        For eg : if below are the records available in solr, I need to whether 
id with values 3,4,5,6 are available in solr or not. I want the query to return 
list of unavailable records.

[{
      "id":"1",
                        "Name":Arjun
},
        {
                        "id":"2",
                        "Name":Arun,
         },
         {
      "id":"3",
                "Name":Arun
         }]

Thanks & Regards,
       Arjun M