Yes, my original question is about search. And Mark did answered is in his
original reply. I am guessing that the replicas are updated sequentially
so the newly added documents will be available in some replicas before
other. I want to know where SolrCloud stands in terms of CAP.
Bill
On
Solr is provides availability and it is tolerant to partioning so that leaves
consistency. It is eventual consistent.
-Original message-
From:Bill Au bill.w...@gmail.com
Sent: Fri 16-Nov-2012 15:00
To: solr-user@lucene.apache.org
Subject: Re: consistency in SolrCloud replication
I want to know where SolrCloud stands in terms of CAP.
SolrCloud is a CP system. In the face of partitions, SolrCloud favors
consistency over availability (mostly concerning writes). The system
is eventually consistent, but should become consistent with a pretty
low latency, unlike many cases
Thanks for the info, Mark. By a request won't return until it's affected
all replicas, are you referring to the update request or the query?
Bill
On Wed, Nov 14, 2012 at 7:57 PM, Mark Miller markrmil...@gmail.com wrote:
It's included as soon as it has been indexed - though a request won't
I'm talking about an update request. So if you make an update, when it
returns, your next search will see the update, because it will be on
all replicas. Another process that is searching rapidly may see an
eventually consistent view though (very briefly). We have some ideas
to make that view more
Mark Miller-3 wrote
I'm talking about an update request. So if you make an update, when it
returns, your next search will see the update, because it will be on
all replicas.
I presume this is only the case if (of course) the client also sent a
commit. So you're saying the commit call will not
It depends - no commit necessary for realtime get. Otherwise, yes, you would
need to do at least a soft commit. That works the same way though - so if you
make your update, then do a soft commit, you can be sure your next search will
see the update on all the replicas. And with realtime get, of
I think Bill was asking about search
I think the Q is whether the query hitting the shard where a doc was sent
for indexing would see that doc even before that doc has been copied to
replicas.
I didn't test it, but I'd think the answer would be positive because of the
xa log.
Otis
--
It's included as soon as it has been indexed - though a request won't return
until it's affected all replicas. Low latency eventual consistency.
- Mark
On Nov 14, 2012, at 5:47 PM, Bill Au bill.w...@gmail.com wrote:
Will a newly indexed document included in search result in the shard leader
