Cassandra Summit 2015 is upon us!
Every year, the conference gets bigger and bigger, and the chance of IRL
meeting people you've "met" online gets smaller and smaller.
To improve everyone's chances, if you are attending the summit :
1) respond on-thread with a brief introduction (and physical
I'am here! Beaded guy, in a blue gingham shirt. I'll be at the reception.
On Tue, Sep 22, 2015 at 2:59 PM, Jonathan Haddad wrote:
> Yo. It's me. Haddad, aka rustyrazorblade. 6'1", hair probably in a bun
> and a beard. Helping with training today, giving a talk on
I will be wearing a red t-shirt that says SimpleReach and I will be at the
reception tonight, the MVP dinner and the summit both days. I'm about
5'11" and probably going to be the best looking person there. ;)
See you all at the summit.
On Tue, Sep 22, 2015 at 11:27 AM, Robert Coli
Yo. It's me. Haddad, aka rustyrazorblade. 6'1", hair probably in a bun
and a beard. Helping with training today, giving a talk on pyspark & on
the python driver tomorrow. I'll be at the MVP dinner. Wearing a DataStax
training t shirt today, not sure about the rest of the time though.
Here I
select * from test where a = ? and b = ?
On Tue, Sep 22, 2015 at 10:27 AM, sai krishnam raju potturi <
pskraj...@gmail.com> wrote:
> thanks for the information. Posting the query too would be of help.
>
> On Tue, Sep 22, 2015 at 11:56 AM, Jaydeep Chovatia <
> chovatia.jayd...@gmail.com> wrote:
>
thanks for the information. Posting the query too would be of help.
On Tue, Sep 22, 2015 at 11:56 AM, Jaydeep Chovatia <
chovatia.jayd...@gmail.com> wrote:
> Please find required details here:
>
> - Number of req/s
>
> 2k reads/s
>
> - Schema details
>
> create table test {
>
>
Tzach,
Can you point to any documentation on scylladb site which talks about
how/why scylla db performs better than Cassandra while using the same
architecture?
Regards
Sachin
On Tue, Sep 22, 2015 at 9:18 AM, Tzach Livyatan
wrote:
> Hello Cassandra users,
>
> We are
Hi,
We are using Cassandra 2.0.14 with Hector 1.1.4. Each node in cluster has an
application using Hector and a Cassandra instance.
I want suggestions on the approach we are taking for throttling Cassandra load.
Problem Statement:
Misbehaved clients can bring down Cassandra clusters by
Thank you so much Jeff! I will bump to Cassandra 2.1.9 and update this
thread with the results!
Thanks,
Venkatesh
On Mon, Sep 21, 2015 at 2:19 PM, Jeff Jirsa
wrote:
> The timestamp involed here isn’t the one defined in the schema, it’s the
> timestamp written on
First glance at their github, it looks like they re-implemented Cassandra
in C++. 90% components in Cassandra are
in scylladb, i.e. compaction, repair, CQL, gossip, SStable.
With C++, I believe this helps performance to some extent up to a point
when compaction has not run yet.
Then, it will be
I came across this article:
zdnet.com/article/kvm-creators-open-source-fast-cassandra-drop-in-replacement-scylla/
Tzach, I would love to know/understand moree about ScyllaDB too. Also the
benchmark seems to have only 1 DB Server. Do you have benchmark numbers
where more than 1 DB servers were
On Tue, Sep 22, 2015 at 1:06 PM, Anuj Wadehra
wrote:
> We are using Cassandra 2.0.14 with Hector 1.1.4. Each node in cluster has
> an application using Hector and a Cassandra instance.
>
Why are you using Hector?
=Rob
On Wed, Sep 23, 2015 at 12:20 AM, Minh Do wrote:
> First glance at their github, it looks like they re-implemented Cassandra
> in C++. 90% components in Cassandra are
> in scylladb, i.e. compaction, repair, CQL, gossip, SStable.
>
True
>
>
> With C++, I believe this helps
On Wed, Sep 23, 2015 at 12:13 AM, Venkatesh Arivazhagan <
venkey.a...@gmail.com> wrote:
> I came across this article:
> zdnet.com/article/kvm-creators-open-source-fast-cassandra-drop-in-replacement-scylla/
>
> Tzach, I would love to know/understand moree about ScyllaDB too. Also the
> benchmark
very interesting. I'm glad to see someone building a drop in replacement
for Cassandra.
On Tue, Sep 22, 2015 at 5:40 PM, Tzach Livyatan
wrote:
> Hi Sachin
>
> On Tue, Sep 22, 2015 at 11:40 PM, Sachin Nikam wrote:
>
>> Tzach,
>> Can you point to
Hi Sachin
On Tue, Sep 22, 2015 at 11:40 PM, Sachin Nikam wrote:
> Tzach,
> Can you point to any documentation on scylladb site which talks about
> how/why scylla db performs better than Cassandra while using the same
> architecture?
>
see here
Hey everyone,
I will be at the summit too on Wed and Thu. I am giving a talk on Thursday at
2.40pm.
Would love to meet everyone on this list in person. Here is an old picture of
mine:
https://events.mfactormeetings.com/accounts/register123/mfactor/datastax/events/dstaxsummit2015/guller.jpg
I am here. Wearing my assorted Cassandra shirts from meetups and
conferences. Would be happy to meet anyone from this mailing list because
the conversations here have been very valuable as I have ramped up with
Cassandra. And I passed my developer certification today. :-) I am
identifiable from
Hi Robert,
We will be moving to CQL incrementally. But that would take some time (at least
6 mths). Till then we need a solution for throttling load. Can you comment on
the approach mentioned and any better ideas for achieving that?
Thanks
Anuj
Sent from Yahoo Mail on Android
ping.
On Mon, Sep 21, 2015 at 11:51 AM, Dikang Gu wrote:
> I have tried all of them, neither of them worked.
> 1. decommission: the host had hardware issue, and I can not connect to it.
> 2. remove, there is not HostID, so the removenode did not work.
> 3.
I’m here. Will be speaking Wednesday on DTCS for time series workloads:
http://cassandrasummit-datastax.com/agenda/real-world-dtcs-for-operators/
Picture if you recognize me, say hi:
https://events.mfactormeetings.com/accounts/register123/mfactor/datastax/events/dstaxsummit2015/jirsa.jpg
Hi guys.
I'm already here and I'll be the whole Summit. I'll be doing a live demo on
Thursday on troubleshooting Cassandra production issues as a developer.
This is me!! https://twitter.com/calonso/status/646352711454097408
Carlos Alonso | Software Engineer | @calonso
Please find required details here:
- Number of req/s
2k reads/s
- Schema details
create table test {
a timeuuid,
b bigint,
c int,
d int static,
e int static,
f int static,
g int static,
h int,
i text,
j text,
k text,
l text,
m set
n bigint
o bigint
p bigint
q
Hello Cassandra users,
We are pleased to announce a new member of the Cassandra Ecosystem -
ScyllaDB
ScyllaDB is a new, open source, Cassandra-compatible NoSQL data store,
written with the goal of delivering superior performance and consistent low
latency. Today, ScyllaDB runs 1M tps per server
Hi Joseph,
I think 2000 keyspaces might be just too much. Fewer keyspaces (and CFs)
will probably work much better.
kind regards,
Christian
On Tue, Sep 22, 2015 at 9:29 AM, joseph gao wrote:
> Hi, anybody could help me?
>
> 2015-09-21 0:47 GMT+08:00 joseph gao
Hi, anybody could help me?
2015-09-21 0:47 GMT+08:00 joseph gao :
> ps : that's the code in java drive , in MetaData.TokenMap.build:
>
> for (KeyspaceMetadata keyspace : keyspaces)
> {
> ReplicationStrategy strategy = keyspace.replicationStrategy();
> Map
Hi,
Before speaking about tuning, can you provide some additional information ?
- Number of req/s
- Schema details
- JVM settings about the heap
- Execution time of the GC
43ms for a read latency may be acceptable according to the number of request
per
General advice advocates for individual async inserts as the fastest way to
insert data into Cassandra. Our insertion mechanism is based on that model
and recently we have been evaluating performance, looking to measure and
optimize our ingestion rate.
I side-tracked some punctual benchmarks and
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