o <ro...@sproutling.com> wrote:
>>
>> If I understand how Cassandra nodes work, they must contain a list of
>> seed’s IP addressed in config file.
>>
>> This requirement makes cluster setup unnecessarily complicated. Is it
>> possible to use DNS name for seed
vice contained in this Email are subject
> to the terms and conditions expressed in any applicable governing The Home
> Depot terms of business or client engagement letter. The Home Depot
> disclaims all responsibility and liability for the accuracy and content of
> this attachment and f
'min_sstable_size' : 50,
>
> 'min_threshold' : 4,
>
> 'tombstone_compaction_interval' : 86400,
>
> 'tombstone_threshold' : 0.2,
>
> 'unchecked_tombstone_compaction' : false
>
> };
>
>
>
>
>
&g
aware routing.
>>
>> Unless you're trying to do a coordinator tier (and you're not, according
>> to your original post), this is a pretty bad idea and I'd advise you to
>> push back on that requirement.
>>
>> On Tue, Apr 5, 2016 at 12:47 PM Steve Robenalt <sroben...@highwi
>> preferred option.
>>
>> 2. Write a new load balancing policy that also uses the HostStateListener
>> for tracking host up and down messages, that essentially accomplishes
>> "sticky" request routing with failover to other nodes.
>>
>> Is option 2 the onl
ar 23, 2016 at 12:09 PM Robert Coli <rc...@eventbrite.com>
>> wrote:
>>
>>> On Wed, Mar 23, 2016 at 9:50 AM, Ralf Steppacher <ralf.viva...@gmail.com
>>> > wrote:
>>>
>>>> How come I end up with that large a number of tombstones?
>>
ted and may be unlawful. When addressed
>> to our clients any opinions or advice contained in this Email are subject
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>> Depot terms of business or client engagement letter. The Home Depot
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>> items of a destructive nature, which may be contained in this attachment
>> and shall not be liable for direct, indirect, consequential or special
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>
--
Steve Robenalt
Software Architect
sroben...@highwire.org <bza...@highwire.org>
(office/cell): 916-505-1785
HighWire Press, Inc.
425 Broadway St, Redwood City, CA 94063
www.highwire.org
Technology for Scholarly Communication
61298018c46954
>
> It all goes south at about line 433 (time 19:46:43) where the client
> throws a:
> io.netty.handler.codec.DecoderException:
> com.datastax.driver.core.exceptions.DriverInternalError: Adjusted frame
> length exceeds 268435456: 462591744 - discarded
>
> Any
eneral statement. That makes sense.
>>
>>
>> On Tue, Mar 8, 2016 at 10:06 AM Steve Robenalt <sroben...@highwire.org>
>> wrote:
>>
>>> Hi Henry,
>>>
>>> I would suspect that the tombstones are necessary to overwrite any
>>> previou
as wondering if someone could help explain why sending nulls as part of
> a prepared statement update would result in tombstones.
>
> Thank you,
> - Henry
>
--
Steve Robenalt
Software Architect
sroben...@highwire.org <bza...@highwire.org>
(office/cell): 916-505-1785
HighWire P
gt;>>> But Jeff, kudo that you are able to use EBS. I didn't go through the
>>>>>> video, do you actually use PIOPS or just standard GP2 in your production
>>>>>> cluster?
>>>>>>
>>>>>> On Sat, Jan 30, 2016 at 1:28 PM,
be recommended going forward as well.
> sure, technically, someone could use the legacy instances, but the question
> is what we should be recommending as best practice going forward.
>
> Yeah, the i2 instances look like the sweet spot for any non-EBS clusters.
>
> -- Jack Krupansky
gt;>>>>>>>
>>>>>>>> We run using 4T GP2 volumes, which guarantee 10k iops. Even at 1M
>>>>>>>> writes per second on 60 nodes, we didn’t come close to hitting even 50%
>>>>>>>> utilization (10k is more than enough
s a lot.
>
> Also, is there any mechanism to select which node to be remote
> coordinator?
>
> Thanks!
>
> Jun
>
--
Steve Robenalt
Software Architect
sroben...@highwire.org <bza...@highwire.org>
(office/cell): 916-505-1785
HighWire Press, Inc.
425 Broadway St, Redwood City, CA 94063
www.highwire.org
Technology for Scholarly Communication
do I replace “” with?
>>>>
>>>>
>>>>
>>>> Is “com.datastax.driver.core” even correct, or am I going down the
>>>> wrong path? I am using the DataStax 2.0.2 driver, with Cassandra 2.0.8.
>>>>
>>>>
>>>>
>>>> Should I be u
docs.datastax.com/en/cassandra/2.1/cassandra/dml/architectureClientRequestsMultiDCWrites_c.html.
> It
> shows that node 10 in DC 1 will send directly 3 copies to 3 nodes in DC2,
> without using remote coordinator.
>
> I'm wondering which case is true, because in multiple data ce
k for clock sync issues between nodes in our ring?
>>> How close do they need to be?
>>>
>>>
>>>> If you have high frequency updates in the same partition from the same
>>>> client you should probably use client-side timestamps with a configure
,
>
> Can Cassandra use GPU's? If not can someone recommend a open source
> database that runs on GPU's? I am interested in seeing the performance
> difference of a database that is under 2GB run on a GPU card such as as
> NVIDA gtx 980.
>
> Thanks,
> -Tony
>
--
Stev
potential
impact on the Spark and/or Titan integration with Cassandra, rather than on
Cassandra itself.
Steve
On Tue, Dec 1, 2015 at 12:35 PM, james anderson <james.ander...@setf.de>
wrote:
> good evening;
>
> On 2015-12-01, at 21:17, Steve Robenalt <sroben...@highwire.org&g
ian Tarbox <briantar...@gmail.com> wrote:
> unsubscribe
>
> --
> http://about.me/BrianTarbox
>
--
Steve Robenalt
Software Architect
sroben...@highwire.org <bza...@highwire.org>
(office/cell): 916-505-1785
HighWire Press, Inc.
425 Broadway St, Redwood City,
5 AM, Michael Shuler <mich...@pbandjelly.org>
>> wrote:
>>
>>> On 10/22/2015 10:14 PM, Ajay Garg wrote:
>>>
>>>> However, CAS11 refuses to come up now.
>>>> Following is the error in /var/log/cassandra/system.log ::
>>>>
>>>>
>>>>
>>>> ERROR [main] 2015-10-23 03:07:34,242 CassandraDaemon.java:391 - Fatal
>>>> configuration error
>>>> org.apache.cassandra.exceptions.ConfigurationException: Cannot change
>>>> the number of tokens from 1 to 256
>>>>
>>>
>>> Check your cassandra.yaml - this node has vnodes enabled in the
>>> configuration when it did not, previously. Check all nodes. Something
>>> changed. Mixed vnode/non-vnode clusters is bad juju.
>>>
>>> --
>>> Kind regards,
>>> Michael
>>>
>>
>>
>>
>> --
>> Regards,
>> Ajay
>>
>
>
>
> --
> Regards,
> Ajay
>
--
Steve Robenalt
Software Architect
sroben...@highwire.org <bza...@highwire.org>
(office/cell): 916-505-1785
HighWire Press, Inc.
425 Broadway St, Redwood City, CA 94063
www.highwire.org
Technology for Scholarly Communication
the nature of
the workload.
Steve
On Fri, Oct 9, 2015 at 12:36 PM, Brice Dutheil <brice.duth...@gmail.com>
wrote:
> On Fri, Oct 9, 2015 at 2:27 AM, Steve Robenalt <sroben...@highwire.org>
> wrote:
>
> In general, if you write at QUORUM and read at ONE (or LOCAL variants
&g
But we
> very quickly fall back to local_one in the cases where some data fast is
> better than a failure. Currently we do that on a per read basis but we
> could I suppose detect a pattern or just look at the gossip to decide to go
> en masse into a degraded read mode
>
> Sent from m
he AP side of the CAP theorem. So how Cassandra can
>> deliver realtime consistent data?
>> AFAIK, choosing a consistency level equals to ALL can be a huge
>> performance hit for C*, so, please, explain me why I should choose C*
>> for realtime data
>> that s
"1": {
> "condition": "BoardStation",
> "action": "FareAmount=9.25",
> "ruleOrder": "1"
> }
> }
>
> message="Error decoding JSON value for effectivestartdate:
de IRC (irc.freenode.org) to chat and connect
> with other attendees!
>
>
>
> MY CONTRIBUTION :
>
> --
>
> I will be at the summit on Wednesday and Thursday. I am 5'8" or so, and
> will be wearing glasses and either a red or blue "Eventbrite Engineering"
> t-shirt with a graphic logo of gears on it. Come say hello! :D
>
>
>
> =Rob
>
>
>
>
>
--
Steve Robenalt
Software Architect
sroben...@highwire.org <bza...@highwire.org>
(office/cell): 916-505-1785
HighWire Press, Inc.
425 Broadway St, Redwood City, CA 94063
www.highwire.org
Technology for Scholarly Communication
A few observations from what you've said so far:
1) IN clauses in CQL can have performance impact by including sets of keys
that are spread across the cluster.
2) We previously used m3.large instances in our cluster and would see
occasional read timeouts even at CL.ONE. We upgraded to i2.xlarge
, Steve Robenalt sroben...@highwire.org
wrote:
I agree with Rob. You shouldn't need to change the read timeout.
We had similar issues with intermittent ReadTimeoutExceptions for a while
when we ran Cassandra on underpowered nodes on AWS. We've also seen them
when executing unconstrained queries
I agree with Rob. You shouldn't need to change the read timeout.
We had similar issues with intermittent ReadTimeoutExceptions for a while
when we ran Cassandra on underpowered nodes on AWS. We've also seen them
when executing unconstrained queries with very large ResultSets (because it
takes
Hi all,
We are migrating a small cluster on AWS from instances based on spinning
disks (using instance store) to SSD-backed instances and we're trying to
pick the proper instance type. Some of the recommendations for spinning
disks say to use different drives for log vs data partitions to avoid
Neelakantan
On Sep 4, 2014, at 8:05 PM, Steve Robenalt sroben...@highwire.org
wrote:
Hi all,
We are migrating a small cluster on AWS from instances based on spinning
disks (using instance store) to SSD-backed instances and we're trying to
pick the proper instance type. Some
Thanks Robert! I am assuming that you meant that it's possible with a
single SSD, right?
On Thu, Sep 4, 2014 at 5:42 PM, Robert Coli rc...@eventbrite.com wrote:
On Thu, Sep 4, 2014 at 5:05 PM, Steve Robenalt sroben...@highwire.org
wrote:
We are migrating a small cluster on AWS from
, Robert Coli rc...@eventbrite.com wrote:
On Thu, Sep 4, 2014 at 5:44 PM, Steve Robenalt sroben...@highwire.org
wrote:
Thanks Robert! I am assuming that you meant that it's possible with a
single SSD, right?
Yes, no matter how many SSDs you have you are unlikely to be able to
convince one
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