Is there a way to speed up the creation of keyspace + tables during
integration tests? I am using an RF of 1, with SimpleStrategy, but it still
takes upto 10-15 seconds.
Hello Kafka/Cassandra experts,
*I am getting below error….*
org.apache.kafka.common.network.NetworkReceive.readFromReadableChannel(
NetworkReceive.java:91)
at org.apache.kafka.common.network.NetworkReceive.
readFrom(NetworkReceive.java:71)
at
Hi Guys,
Is there a way to ALTER KEYSPACE using cqlengine python driver?
Schema management for cqlengine supports CREATE/DROP KEYSPACE but does not seem
to support ALTER.
https://github.com/datastax/python-driver/blob/master/cassandra/cqlengine/management.py
With CQL data modeling, everything is called a "row". But really in CQL, a
row is just a logical concept. So if you think of "wide partition" instead
of "wide row" (partition is what is determined by the has index of the
partition key), it will help the understanding a bit: one wide-partition
may
I have seen the following warn in system.log, as a temporary turn around i
increased commitlog_size in cassandra.yaml to 64, but how can i trace it
down ??? which appilcation is trying to write large writes and to which
keyspace and table it is trying to write ??
WARN [SharedPool-Worker-3]
// user table: skinny partition
CREATE TABLE user (
user_id uuid,
firstname text,
lastname text,
PRIMARY KEY ((user_id))
);
// sensor_data table: wide partition
CREATE TABLE sensor_data (
sensor_id uuid,
date timestamp,
value double,
PRIMARY KEY
Hi,
Can someone clarify how you would model a "wide" row cassandra table? From
what I understand, a wide row table is where you keep appending columns to
a given row.
The other way to model a table would be the "regular" style where each row
contains data so you would during a SELECT you would
Mehdi,
Nothing as detailed as Oracle's OFA currently exists. You can probably also
find some useful information here:
https://docs.datastax.com/en/landing_page/doc/landing_page/planning/planningAbout.html
Kurt Greaves
k...@instaclustr.com
www.instaclustr.com
On 18 October 2016 at 07:38, Mehdi
On Mon, 17 Oct 2016 15:59:41 -0400Ben Bromhead
b...@instaclustr.com wrote
For the times that AWS retires an instance, you get plenty of notice and it's
generally pretty rare. We run over 1000 instances on AWS and see one forced
retirement a month if that. We've never had an instance
Hi Brooke,
Thank you for your advices. Finally, no technical standards (provided by
DataStax or Apache) exists for deploying Cassandra in a production environment?
In comparison with some RDBMS (Oracle, MySQL), some standards (OFA for
instance) exists and are provided by Oracle.
Best
Hi Mehdi,
In addition, give some thought to your cluster topology. For maximum fault
tolerance and availability I would recommend using at least three nodes
with a replication factor of three. Ideally, you should also use Cassandra
logical racks. This will reduce the risk of outage and make
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