This one seems hard to believe - is it true that CouchDB blocks the
server whilst updating views?
View updates can be alot of work for a server.
So in reality, queries to the server pause whilst views are updated?
This doesn't seem practical for any production usage.
Can someone confirm that this is true, that during production a server
will block whilst views are updated?
Does anyone else see this as a major issue or am I missing something?
I'm happy to say I have missed the point many times before :-)
I'm with Mark - I can't think of any other type of modern server that
stops processing to get something else done.
thanks
as
On 23/03/2011, at 2:15 PM, Mark Hahn wrote:
Can some please direct me to where this behavior is documented? I
just went over the technical description again and this is not
mentioned there. Here is the closest thing I could find and it
doesn't seem to agree with my experience. (From
http://couchdb.apache.org/docs/overview.html).
"CouchDB’s core design is largely optimized around the need for
efficient, incremental creation of views and their indexes."
What is "incremental" about blocking everything for a long time while
views/indexes are created?
I don't mean to be bitchy, and I am sure I will be able to use one of
the many suggestions to ameliorate this problem, but I should not have
to be in production after months of development before discovering
this.
On Tue, Mar 22, 2011 at 7:48 PM, Mark Hahn <[email protected]> wrote:
Apparently I have a lot of solutions to work with. I was quite
worried after first seeing this.
P.S. I studied couch at great lengths for months and I never saw this,
or at least I didn't see the implications. It needs to be discussed
at more length or more specifically in the manual (book?).
P.P.S. Is the book ever going to be updated? I'd pay for a hard
copy.
On Tue, Mar 22, 2011 at 1:15 AM, Gabor Ratky <[email protected]>
wrote:
If blocking and blocking only is the problem and you're OK with
stale data, passing ?stale=ok might solve your problem with
blocking. See http://wiki.apache.org/couchdb/HTTP_view_API for more
details.
Gabor
On Mar 21, 2011, at 6:24 PM, Mark Hahn wrote:
I have noticed that all view queries are blocked for some time
when I just
change one view. This seems like it is going to be a serious
problem when
my db grows. Is there someway to avoid this in production? I've
never seen
mysql or any other db block for any reason.
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Mark Hahn
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Mark Hahn
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949-229-1012
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