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Questions tagged [cassandra]

Apache Cassandra is an open source distributed key-value database cluster, designed to scale linearly when adding nodes. It provides multi-datacenter replication.

It was designed to handle very large amounts of data spread out across many commodity servers while providing a highly available service with no single point of failure. It is a NoSQL solution that was initially developed by Facebook and powered their Inbox Search feature until late 2010.

Official page

Source: wikipedia

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What is the equivalent command of "minikube start --memory 5120 --cpus=4" for "Kind"?

Here in Cassandra deployment instruction, it says: Caution: Minikube defaults to 2048MB of memory and 2 CPU. Running Minikube with the default resource configuration results in insufficient resource errors during this tutorial. To avoid these…
best_of_man
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When and How we should specify "clusterIP" inside the "service.yaml" file?

I tried to deploy mysql and cassandra databases using kubernetes.io/docs instructions. In both of them, within the service.yaml files, they use clusterIP: None like following: For cassandra: apiVersion: v1 kind: Service metadata: labels: …
best_of_man
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Why "Cassandra" uses "StatefulSet" instead of "Deploymdnt" file for "Kubernetes"?

I am trying to deploy Cassandra on my local Kind cluster running on my Ubuntu 22.04 machine. The only instruction I found is this, that uses a StatefulSet for that. I am just wondering to know, isn't a Deployment file something newer? Why they…
best_of_man
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Finding pending cassandra pending compactions information

I am trying to understand the pending compaction statistics that are displayed by cassandra nodetool that can be seen two ways. I am on cassandra 3.11.3. Why would the compaction statistics be different in nodetool tpstats and nodetool…
randominstanceOfLivingThing
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Does Cassandra rebalance the data after inserting additional disks?

I'm running a Cassandra cluster with 5 nodes, each having 10 1Tb disks (JBOD). Currently, one of the nodes is in the problematic situation where a large compaction can no longer succesfully complete due to running out of disk space on a single…
RikJ
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Spark-Cassandra-Connector Issue Exception in thread "main" java.lang.NoClassDefFoundError: com/datastax/spark/connector/rdd/reader/RowReaderFactory

What is going wrong with the Spark Cassandra Connector could you please help to solve this? Scala File: import com.datastax.spark.connector._ import org.apache.spark.sql.SparkSession import org.apache.spark.{SparkConf, SparkContext} object…
Subhrangshu Adhikary
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Required best GUI of Cassandra DB for user interface communication

I am new to the Cassandra DB. Started learning using the command shell. I am searching for the GUI, so please suggest me the best GUI for the Cassandra DB. GUI should have all features like DDL, DML, Import and export all types of files cluster…
Sucharitha
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Cassandra NAMED datacenter

After a day of research, I open a question. I can't rename a cassandra node. I would like to put a node at D1, and another one at D2 both in rack1. But here is the result I get $ nodetool status Datacenter:…
whoami
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aws cluster overprovisioning detection framework/tools

Our team is managing many cassandra clusters on aws, one of our problems is when a user ask us to spawn a new cluster, they can't predict how many nodes they need because of lack of production traffic. Most of time it ends up overprovisioned. Since…
del bao
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How to test to observe Latency Differences when running Cassandra on HDD vs SSD

We had a 3 node cluster running on HDDs. After migrating to SSDs, we ran a load test but haven't seen any latency difference. So we are thinking about running a stress test. Is there any threshold or parameters we should set or any general…
user6288321
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Cassandra node networking accross multiple datacenter

For Multiple datacenter Cassandra cluster deployment Do i need public ip for every nodes? Suppose i've architecture as follows: Datacenter US Node1: eth0 =162.63.93.45 (public ip) eth1= 192.168.56.101(private ip) Node2: eth0=…
wind
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Cassandra versions supported in OpsCenter 5.1.0

We are planning to use Cassandra 2.0.11 but the latest OpsCenter 5.1.0 doesn't support creating a new cluster with Cassandra 2.0.11 package. It shows only 2.0.9. How do we proceed?
Ajay
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Opscenter repair service times out. ERROR: Requested range intersects a local range [...]

My production cluster had the repair service enabled since april 16th with the default 9 days time to completion and repairs would complete properly. However, since may 22nd, it is being disabled automatically by Opscenter: From…
jlemire-zs
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Opscenter 4.1 - ssl agent communication vs internal authentication

My question relates to Opscenter 4.0.2 and Cassandra 2.0.4 with SSL and Auth : agent can't connect. The provided answer does help, but creates another problem. To summarize, everything runs find until I enable ssl between opscenter and the…
jlemire
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Cassandra: Exception Connecting to 127.0.0.1/9160. Reason: Connection refused?

I have installed the Cassandra 1.2.9 into my vps server which is having CentOs. I have Installed it successfully. when i run the sh cassandra-cli, i got the error message org.apache.thrift.transport.TTransportException: java.net.ConnectException:…
Nagaraj
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