lest group.
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 time_
aged releases as quickly as possible,
> and I'll do my best to make 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
freeze? Just allocate more memory?
>
> ** **
>
> Thanks,
>
>
> Rene
>
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
<>
s for monitoring, trend analysis, etc.?
>
> ** **
>
> **JConsole is useful for single node monitoring/etc but not scalable &
> data obviously doesn't persist between sessions...**
>
> **
> **
>
> Many thanks,
>
>
> Brian
>
>
--
-
hing in the closet here. It's just a simple resource
management issue.
On Tue, Oct 4, 2011 at 11:43 AM, ruslan usifov wrote:
> Hello
>
> 2011/10/4 Paul Loy
>
>> Did you read the article you posted?
>>
> Yes
>
>
>> "*We believe that this isn't t
a store for
> Tweets, but there nothing said why they made this decision? Does anybody
> have mo information
>
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
sor methods to discover the value. Is there a way to output the
> Consistency level to make sure that what we have configured is what is
> actually being used?
>
> Anthony
>
>
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
; >>
> >> I've had some experience with that. My main problem was that I had a
> limited vocabulary and a large number of documents. It seems like solandra
> kept all my documents on the same row for a given term. That means the
> documents don't get spread out throught
king would 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://uk.linkedin.com/in/paulloy
--
> Aaron Morton
> Freelance Cassandra Developer
> @aaronmorton
> 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&
gin reading, 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 wrote:
>
>> Yeah, we're processing item similarities. So we are writing single columns
&
PM, Jonathan Ellis wrote:
> Step 0: use multiple threads to insert
>
> On Thu, Aug 18, 2011 at 10:03 AM, Paul Loy wrote:
> > Yeah, we're processing item similarities. So we are writing single
> columns
> > at a time. Although we do batch these into 400 mutations befo
twork bound?
>
> -Jake
>
> On Thu, Aug 18, 2011 at 7:08 AM, Paul Loy 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
>>
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...@keterace
plitCallable.call(ColumnFamilyInputFormat.java:138)
>at
> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>at java.util.concurrent.FutureTask.run(FutureTask.java:138)
>at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>
we don't have those guarantees on EC2. Networks can fluctuate wildly.
On Mon, Jul 25, 2011 at 2:00 PM, zGreenfelder wrote:
>
>
> On Mon, Jul 25, 2011 at 8:51 AM, Paul Loy wrote:
>
>> As I understand it, this will not quarantee that they are millisecond
>> accura
http://www.endruntechnologies.com/faq.htm#How_accurate_is
On Mon, Jul 25, 2011 at 1:38 PM, Sooraj S 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 wrote:
>
>> And I guess there's the ne
t
> correct.
>
> On Sunday, July 24, 2011, ้ญ้ไป wrote:
> > hi all,
> >I'm launching a cassandra cluster with 30 nodes. I wonder whether the
> inconsistency of host clocks will influence the performance of cluster.
> > Thanks!
> >
> >
>
Do you mean the ring does not change until the move has completed?
On Mon, Jul 4, 2011 at 4:49 PM, Edward Capriolo wrote:
>
>
> On Mon, Jul 4, 2011 at 10:21 AM, Paul Loy wrote:
>
>> Well, by issuing a nodetool move when a node is under high load, you
>> basically mak
ies. 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?
>
> ** *
hat I didn't understand or do I miss something else? Is
> the only left strategy to make sure that
> the cluster grows unbalanced so one can add nodes to the hotspots? However
> in this case you have to make sure
> that this strategy is lasting. Could be too optimistic...
>
>
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 wrote:
> private static int compareTimestampBytes(ByteBuffer o1, ByteBuffer o2)
> {
&g
#x27;t this mean the keys need to be
> generated all on the same host when you either 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
dra CF with secondary indices, or plan
> scan and compare of every record?
>
> Thanks a bunch!
>
> Mark
>
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
edlinuxg...@gmail.com]
> *Sent:* 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 wrote:
>
>> ugh!
>>
>> On Fri, Jun 3, 2011 at 5:19 PM,
ugh!
On Fri, Jun 3, 2011 at 5:19 PM, Edward Capriolo wrote:
>
>
> On Fri, Jun 3, 2011 at 12:14 PM, Paul Loy 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 inst
,
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
at guys' not coming back
> this time.")
>
> On Fri, May 27, 2011 at 10:47 AM, Paul Loy 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 nodeto
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 wrote:
> ahh, thanks.
>
> On Fri, May 27, 2011 at 4:43 PM,
ahh, thanks.
On Fri, May 27, 2011 at 4:43 PM, Jonathan Ellis 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 wrote:
> > We have a 4 node cluster with a replication factor o
.
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
age was sent using IMP, the Internet Messaging Program.
>> >
>> > This email and any attachments to it may be confidential and are
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>> Technology
>> > Park, Ively Road, Farnborough, 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://uk.linkedin.com/in/paulloy
Cassandra starts properly without giving any warnngs/error but does not
>> create the keyspace offline
>> which is defined above.
>>
>> Please suggest.
>>
>> Thanks
>> Anurag
>>
>
>
>
> --
> Narendra Sharma
> Solution Architect
> *http://www.persistentsys.com*
> *http://narendrasharma.blogspot.com/*
>
>
>
--
-
Paul Loy
p...@keteracel.com
http://uk.linkedin.com/in/paulloy
shMap) which 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.
> >
> > --
> > -
op in HashMap) which 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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