RE: Overseer queues confused me

[Illu.Y.Ying (mis.sh04.Newegg) 41417]

can someone answer my question?

Thanks in advance

Best Regards,
Illu Ying

-----Original Message-----
From: Illu.Y.Ying (mis.sh04.Newegg) 41417 [mailto:illu.y.y...@newegg.com] 
Sent: Wednesday, July 10, 2013 10:44 AM
To: solr-user@lucene.apache.org
Subject: Overseer queues confused me

Hi there：
         In solr4.3 source code , I found overseer use 3 queues to handle all 
solrcloud management request:
         1: /overseer/queue
                2: /overseer/queue-work
                3: /overseer/collection-queue-work

         ClusterStateUpdater use 1st & 2nd queue to handle solrcloud shard or 
state request.
         When peek request from 1st queue, then offer it to 2nd queue and 
handle it.

         OverseerCollectionProcessor use 3rd queue to handle collection related 
request.

         My question is why ClusterStateUpdater use 2 queues but 
OverseerCollectionProcessor use 1 also can handle request correctly?
         Is there any additional design for ClusterStateUpdater?


         Thanks in advance:)


Best Regards,
Illu Ying