.
Many thanks in advance,
Paul.
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
In a multi server env, to avoid key collisions timeuuid may be the better
choice.
On Monday, February 27, 2012, Tamar Fraenkel wrote:
Hi!
I have a column family where I use rows as time buckets.
What I do is take epoc time in seconds, and round it to 1 hour (taking the
result of
this delay smaller as time goes on. I do
not have a specific target date for 0.8.10 rpms, but real soon :)
--
Warm regards,
Michael Shuler
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
, but there nothing said why they made this decision? Does anybody
have mo information
--
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Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
. That means the
documents don't get spread out throught the cluster and search was painfully
slow. We ended up rolling up our own solution and not using cassandra at all
for that purpose (althought we still use it for storage).
--
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Paul Loy
p
is
actually being used?
Anthony
--
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Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
be
the column value which jives with the fact that you're saying it seems
to depend on the value.
(I haven't checked current nor past versions of pycassa to determine
if this is plausible. Just speculating.)
--
-
Paul Loy
p...@keteracel.com
http
://www.thelastpickle.com
On 19/08/2011, at 3:43 AM, Paul Loy wrote:
Yeah, the data after crunching drops to just 65000 columns so one Cassandra
is plenty. That will all go in memory on one box. It's only the crunching
where we have lots of data and then need it arranged in a structured manner.
That's why I
I can change to increase the write throughput.
Perhaps disabling all caching, etc, as I won't be able to keep it all in
memory anyway and only want to query the results once.
Any thoughts would be appreciated,
Paul.
--
-
Paul Loy
p...@keteracel.com
?
-Jake
On Thu, Aug 18, 2011 at 7:08 AM, Paul Loy ketera...@gmail.com wrote:
Hi All,
I have a program that crunches through around 3 billion calculations. We
store the result of each of these in cassandra to later query once in order
to create some vectors. Our processing is limited by Cassandra
PM, Jonathan Ellis jbel...@gmail.com wrote:
Step 0: use multiple threads to insert
On Thu, Aug 18, 2011 at 10:03 AM, Paul Loy ketera...@gmail.com wrote:
Yeah, we're processing item similarities. So we are writing single
columns
at a time. Although we do batch these into 400 mutations before
, take a look at the new bulk loader in
cassandra:
http://www.datastax.com/dev/blog/bulk-loading
-Jake
On Thu, Aug 18, 2011 at 11:03 AM, Paul Loy ketera...@gmail.com wrote:
Yeah, we're processing item similarities. So we are writing single columns
at a time. Although we do batch these into 400
(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
!
--
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Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
://www.endruntechnologies.com/faq.htm#How_accurate_is
On Mon, Jul 25, 2011 at 1:38 PM, Sooraj S soor...@sparksupport.com wrote:
may be you can sync the servers with pool.ntp.org with running ntp as a
service.
On 25 July 2011 14:34, Paul Loy ketera...@gmail.com wrote:
And I guess there's the next problem
we don't have those guarantees on EC2. Networks can fluctuate wildly.
On Mon, Jul 25, 2011 at 2:00 PM, zGreenfelder zgreenfel...@gmail.comwrote:
On Mon, Jul 25, 2011 at 8:51 AM, Paul Loy ketera...@gmail.com wrote:
As I understand it, this will not quarantee that they are millisecond
consistencies. The typical recommendation is RF=3 and
QUORUM reads/writes.
** **
Dan
** **
*From:* Paul Loy [mailto:ketera...@gmail.com]
*Sent:* July-04-11 5:59
*To:* user@cassandra.apache.org
*Subject:* Re: How to scale Cassandra?
** **
That's basically how I understand
query or insert? Or
does cassandra only inspect the bits that represent the time stamp of
the UUID when performing a lookup?
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
well, to clarify, it first checks the timestamp bytes, then the rest so it
doesn;t say they're the same if they came from 2 different servers.
On Mon, Jun 6, 2011 at 4:52 PM, Paul Loy ketera...@gmail.com wrote:
private static int compareTimestampBytes(ByteBuffer o1, ByteBuffer o2
, or plan
scan and compare of every record?
Thanks a bunch!
Mark
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
,
--
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Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
ugh!
On Fri, Jun 3, 2011 at 5:19 PM, Edward Capriolo edlinuxg...@gmail.comwrote:
On Fri, Jun 3, 2011 at 12:14 PM, Paul Loy ketera...@gmail.com wrote:
We embed cassandra in our app. When we first load a cluster, we specify
one node in the cluster as the seed node. This node installs
:* Friday, June 03, 2011 12:00 PM
*To:* user@cassandra.apache.org
*Subject:* Re: Loading Keyspace from YAML in 0.8
On Fri, Jun 3, 2011 at 12:35 PM, Paul Loy ketera...@gmail.com wrote:
ugh!
On Fri, Jun 3, 2011 at 5:19 PM, Edward Capriolo edlinuxg...@gmail.comwrote:
On Fri, Jun 3, 2011
.
--
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Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
ahh, thanks.
On Fri, May 27, 2011 at 4:43 PM, Jonathan Ellis jbel...@gmail.com wrote:
Quorum of 2 is 2. You need at least RF=3 for quorum to tolerate losing
a node indefinitely.
On Fri, May 27, 2011 at 10:37 AM, Paul Loy ketera...@gmail.com wrote:
We have a 4 node cluster
I guess my next question is: the data should be complete somewhere in the
ring with RF = 2. Does cassandra not redistribute the replication ring
without a nodetool decommission call?
On Fri, May 27, 2011 at 4:45 PM, Paul Loy ketera...@gmail.com wrote:
ahh, thanks.
On Fri, May 27, 2011 at 4:43
' not coming back
this time.)
On Fri, May 27, 2011 at 10:47 AM, Paul Loy ketera...@gmail.com wrote:
I guess my next question is: the data should be complete somewhere in the
ring with RF = 2. Does cassandra not redistribute the replication ring
without a nodetool decommission call?
On Fri, May
, Hampshire, GU14 0LX
http://www.qinetiq.com.
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com
--
-
Paul Loy
p...@keteracel.com
http
Solution Architect
*http://www.persistentsys.com*
*http://narendrasharma.blogspot.com/*
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
PM, Paul Loy ketera...@gmail.com wrote:
Hi all,
so I just updated Cassandra from 0.7.0 to 0.7.5. I embed Cassandra in my
app
and use StorageProxy for querying.
In one of my unit tests I write a column to Cassandra and then read it
out
again twice in quick succession. The second time I
means we have to
upgrade but I'm concerned that the changes mean our load/stress tests will
not be valid so just need some info to put my mind at ease!
Many thanks,
Paul.
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
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