How can we solve EIP allocation using APIs for multiple nodes that are in
one ASG? What are the config management tools that you are referring to?
On Mon, Oct 16, 2017 at 9:23 PM, kurt greaves wrote:
> AWS API's provide the functionality to allocate and associate elastic IPs
> to instances. Ge
We are working on automation framework to build new C* ring in AWS and
looking for suggestions to determine ways to automatically allocate
EIP/public IP during new cluster build and scale up/replace node situations.
We are using elastic IP/public ip for broadcast address and private IP for
listen
AWS Backup/Restore process/tools for C*/DSE C*:
Has anyone used Opscenter 6.1 backup tool to backup/restore data for larger
datasets online ?
If yes, did you run into issues using that tool to backup/restore data in
PROD that caused any performance or any other impact to the cluster?
If no, what
Team,
1. What is the stable version for DSE 5.0 to upgrade from DSE 4.8.x?
2. Is anybody switched to using DSE Unified auth model which enfores to use
one auth policy as primary and other secondary?
3. Do I need to use multi-auth/DSE Unified auth for me upgrade to DSE 5.0
or higher?
Our old
I would like to hear from the community on their experiences or lesson
learnt on hosting Cassandra in cloud platforms like
1. Google Cloud Platform
2. AWS
3. Azure
1. Which cloud hosting is better and Why?
2. What differences of C* over vendor provided NoSQL DB like (Bigtable,
Dynamo,Azure Docu
Has anybody tested time taken to replicate data across regions between
us-east and west or AZ in AWS? Few docs/blogs says its in few 10s of
millisecs.
Please can you provide your insights. Also is there a way to measure the
time lag.
>tables and does a lot more work than streaming without vnodes
>3. Not necessarily
>4. See #2
>
>
> From: cass savy
> Reply-To: "user@cassandra.apache.org"
> Date: Wednesday, December 9, 2015 at 1:26 PM
> To: "user@cassandra.apache.org"
> S
How can we determine/measure the replication lag or latency between on
premise data centers or cross region/Availability zones?
How do you determine if we can share cluster in prod for 2 different
applications
1. Has anybody shared cluster in prod a write heavy use case that captures
user login info (few 100 rpm) and hardly performs few reads per day
and
Use case that is read heavy use case that is 92% read with 10k req
any nodes?
>
> On Wed, Dec 9, 2015 at 4:26 PM, cass savy wrote:
>
>> We want to move our clusters to use Vnodes. I know the docs online say we
>> have to create new DC with vnodes and move to new dC and decommission old
>> one. We use DSE for our c* clusters.C* version i
We want to move our clusters to use Vnodes. I know the docs online say we
have to create new DC with vnodes and move to new dC and decommission old
one. We use DSE for our c* clusters.C* version is 2.0.14
1. Is there any other way to migrate existing nodes to vnodes?
2. What are the known issues w
add
new DC and had to rebuild data
4. I have 2 DC, one with only cassandra, other new DC with cassandra and
spark and with vnodes
On Tue, Nov 17, 2015 at 4:29 PM, Robert Coli wrote:
> On Tue, Nov 17, 2015 at 3:24 PM, cass savy wrote:
>
>> I am exploring vnodes on DSE spark enabled
I am exploring vnodes on DSE spark enabled DC. I added new nodes with 64
vnodes, stream thruput 100mb instead of default 200mb, sokcet_timeout set
to 1hr.
Nodetool rebuild on new node which has vnodes has been running for days and
not completing. Nodetool netstats says its streaming files from 4
Are you suggesting the JDK 7 for client/driver and c* side as well. We use
Java driver 2.1.4 and plan to goto JDK7u80 on application end. In addition,
do I also have to upgrade to Java 7u60+ on C* servers as well.
On Fri, May 15, 2015 at 1:06 PM, Jim Witschey
wrote:
> > This post has some good a
Just curious to know on how you are preparing Prod C* clusters for leap sec.
What are the workaorund other than upgrading kernel to 3.4+?
Are you upgrading clusters to Java 7 or higher on client and C* servers?
Has anybody run DSE 3.2.6(C*1.2.16) on JRE 1.7. I know its recommended that
we have to get to JVM version 7 to get to C*2.0 and higher.
We are experiencing latency issues during rolling upgrade from 1.2 to 2.0.
Hence cannot get o C*1.2, but plan to just upgrade JRE from 1.6 to 1.7. I
wanted to kno
We are upgrading from DSE 3.2 (C*1.2) to 4.5(C*2.0.11) in 6 node cluster
with replication factor =3. App uses CL quorum.
Testing the rolling upgrade in 6 node cluster by upgrading one node at a
time. During the upgrade, we have test script that is tyring to simulate
prod load to write/read data w
at
> worst). Plus you only need to store 30 days of data. The over data size is
> 288000x30=8,640,000 events. I am not even sure if you need C* depending on
> event size.
>
> On Thu, Feb 19, 2015 at 12:00 AM, cass savy wrote:
>
>> 10-20 per minute is the average. Worstcase c
10-20 per minute is the average. Worstcase can be 10x of avg.
On Wed, Feb 18, 2015 at 4:49 PM, Mohammed Guller
wrote:
> What is the maximum number of events that you expect in a day? What is
> the worst-case scenario?
>
>
>
> Mohammed
>
>
>
> *From:* cass s
We want to track events in log Cf/table and should be able to query for
events that occurred in range of mins or hours for given day. Multiple
events can occur in a given minute. Listed 2 table designs and leaning
towards table 1 to avoid large wide row. Please advice on
*Table 1*: not very wid
f you’re asking whether to use a non-Oracle JVM - the answer would be:
> use the Oracle JVM.
> OpenJDK might work, but I’d not recommend it.
>
>
> Am 18.02.2015 um 20:49 schrieb cass savy :
>
> Can we install Oracle JDK instead of JRE in Cassandra servers? We have
> few cluster
ds,
> Mark
>
> On 18 February 2015 at 19:49, cass savy wrote:
>
>> Can we install Oracle JDK instead of JRE in Cassandra servers? We have
>> few clusters running JDK when we upgraded to C*2.0.
>>
>> Is there any known issue or impact with using JDK vs JRE?
>
Can we install Oracle JDK instead of JRE in Cassandra servers? We have few
clusters running JDK when we upgraded to C*2.0.
Is there any known issue or impact with using JDK vs JRE?
What is the reason to not use Oracle JDK in C* servers?
Is there any performance impact ?
Please advice.
Sstableloader works well for large tables if you want to move data from
Cassandra to Cassandra. This works if both C* are on the same version.
Sstable2json and json2sstable is another alternative.
On Nov 11, 2014 4:53 AM, "srinivas rao" wrote:
> Hi Team,
>
> Please suggest me the better options
We run on DSE 3.1.3 and only use the Cassandra in prod cluster.
What is the release that I need to be on right away. Because if I need to
upgrade to DSE 4.5.c* 2.0.7. I need to take 3 paths to get there. I see lot
of improvements for solr/Hadoop features in DSE 4.0 and above.
Can I upgrade to DS
ter,
> firewall, wan?
>
> __
> Sent from iPhone
>
> On 1 Jul 2014, at 6:01 am, cass savy wrote:
>
> We use Datastax Java driver version 1.0.6. Application is running into
> issues connecting to the 3 node cluster. What is cause for it? Applicatio
We use Datastax Java driver version 1.0.6. Application is running into
issues connecting to the 3 node cluster. What is cause for it? Application
is not able to establish a connection at all. I see this error
intermittently few time every other day.
Is the issue related to read/write timeout?Do I
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