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On Nov 6, 2012, at 7:34 PM, Reid Draper wrote:
> Elias,
>
> There's quite a few questions in here, but hopefully I'll answer the meat of
> what you're
> trying to find out. Using `if_not_modified` is _not_ equivalent to a
> distributed atomic
> compare-and-swap (CAS). As yo
Hi Olav. As you have observed the key length of the generated keys is not
guaranteed.
riak_core_util:unique_id_62 generates a 20 byte SHA hash and that value is
converted to a base 62
representation and that representation, converted to a string, becomes the key.
The length of the
generated k
I installed from source and I had directories dev1, dev2, dev3, and dev4.
Each of those directories had sub-directories of bin and etc. I am assuming
that I need the contents of these directories. What is the bare minimum that
I need to start up a cluster like the Quick Start? Each of these dire
On Nov 6, 2012, at 5:43 PM, Kevin Burton wrote:
> This is probably an FAQ but I was unable to find an answer so hopefully there
> will be some patient people.
>
> The “Quick Start” builds a simple cluster all on the same machine (called
> dev1, dev2, and dev3). It assigns the ports, IP addre
Elias,
There's quite a few questions in here, but hopefully I'll answer the meat of
what you're
trying to find out. Using `if_not_modified` is _not_ equivalent to a
distributed atomic
compare-and-swap (CAS). As you've correctly identified, concurrent writers
on different coordinators can all suc
Evening, Morning, Afternoon to All -
For today's Recap: slides, talks, meetup, blogs, and more.
Enjoy.
Mark
twitter.com/pharkmillups
Riak Recap for November 1 - 5
===
1) Dataomic announced Riak support.
* Details here --->
http://blog.datomic.com/2012/11/riak-and-couchbas
Our raid controller is --> 03:00.0 RAID bus controller: LSI Logic / Symbios
Logic LSI MegaSAS 9260 (rev 05)
Here's one processor from /proc/cpuinfo
processor : 0
> vendor_id : GenuineIntel
> cpu family : 6
> model : 44
> model name : Intel(R) Xeon(R) CPU X5647 @ 2.93GHz
> stepping : 2
We had adjusted it down to 0.5GB from the recommended 2GB based on some
older guidelines and had noticed the the page cache was outperforming
level's own cache as we dialed it down. Will let you know what we see after
dropping the cache size, but it probably won't be this week.
Any recommendations
Dietrich,
I forgot to mention that I noticed your app.config has the cache size at 500M.
That will work against you in 1.2.x. I personally introduced a bug that hurts
performance on that setting. My apologies. I recommend you take it below 100M
until release notes publish that the bug is fi
Would you paste the data for one core from /proc/cpuinfo? And do you know the
brand of controller running the SSD drives?
Thank you,
Matthew
On Nov 6, 2012, at 7:04 PM, Dietrich Featherston wrote:
> Thanks for the feedback. We haven't noticed any drop in riak
> responsiveness--quite the oppo
Thanks for the feedback. We haven't noticed any drop in riak
responsiveness--quite the opposite. We were just alarmed at some of the
iostat information we were seeing which may very well result from, as you
pointed out, greater concurrency in layers above the disk subsystem. It's
not of concern at
Dietrich,
I finally reviewed your LOG.all today. The basic analysis is:
- you have a really fast disk subsystem, and
- your machine is bored.
I make the first comment based upon the fact that your Level-0 file creations
take less than 200 ms on files of 40Mbyte with 10,000 keys (or more). I w
Uruka,
Well at least now your numbers make sense. I wasn't trying to be snide in
my response, that wasn't my intention, so sorry if I appeared that way. I
was attempting, poorly, to say that Memory and Bitcask shouldn't be close
to each other so you have other issues.
Now that you have apparent
This is probably an FAQ but I was unable to find an answer so hopefully
there will be some patient people.
The "Quick Start" builds a simple cluster all on the same machine (called
dev1, dev2, and dev3). It assigns the ports, IP addresses, etc. I would like
to do something similar but I would l
First of all, thank you for your reply.
Well, if you tell me that I can beat myself up trying to get what another
person gets in a benchmark, then I don't understand what's the whole point
in post your results here. I thought that you were trying to tell me that
in an similar setup, you could do m
The description of if_not_modified is lacking in the documentation. What
guarantees if_not_modified provides is a question that has been asked in
the list a few times, but for which no satisfactory answer has been given.
Its something I've been wanted answered as well, so I did a bit of digging
Hey,
I'm using keys generated by Riak and have come over some random
failure in my test cases. I have naively assumed that the 160bit hash
would always return a base62 encoded value with the length of 27. On
that point I'm obviously wrong as the shell session below shows.
My question is this by
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