State sharing

[Peyman Faratin]

Hi

I have subclassed a SearchComponent (call this class S), and would like to 
implement the following transaction logic:

1- Client K calls the S's handler

2- S spawns a thread and immediately acks K using 
rb.rsp.add("status","complete") then terminates

public void process (ResponseBuilder rb) 
        {
                SolrParams params = rb.req.getParams();

                try{ 
                        ExecutorService executorService = 
Executors.newCachedThreadPool();

                        Processor job = new  Processor(rb);
        
                        executorService.submit(job);                            
                                                
                        rb.rsp.add("status","complete");

                }catch(Exception e) {e.printStackTrace();};
        }

3- The thread S started ("job" above) does two chunks of logic in serial (call 
these B and C):

        i) B does some processing and sends client K a series of status 
updates, then
        ii) C does some processing and in turn sends K series of status updates 
then one final complete message
        iii)  transaction ends

I am using SOLR 4.3.1. How can I support such a transaction in solr? I've tried 
sharing S's ResponseBuilder with the thread but presumably because S terminates 
in step 2 K will never see the response from B and C. In general I would like 
to implement a mechanism that can share processing state with the client in the 
same http session. 

thank you for your help 

Peyman