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Questions - cassandra

Getting AccessDeniedException when running embedded cassandra with Azul jdk 11

I am trying to run embedded Cassandra using cassandra-unit library in Azul JDK 11 with Gradle project and getting following AccessDenindException. I've checked the permissions of the build folder it i...
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yu.pitomets

java

cassandra

Votes: 0

Answers: 2

Latest Answer

There isn't any magic that happens here since Cassandra is simply using the Java IO utilities so this is a low-level filesystem issue. One of the things to check for is whether the existing commit log...
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Erick Ramirez

cassandra nodetool listsnapshots failed with java.io.NotSerializableException

Cassandra 4.0 is installed in Azure Kubernetes ubuntu 18.04.1 with 3 nodes and RF=3. Node repair is running by reaper 3.0.0. At the same time, run "nodetool listsnapshots" failed with the e...
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hyl

cassandra

nodetool

Votes: 0

Answers: 0

saveToCassandra hangs unexpectedly

This is what my code used to look like: val finalEmails : Dataset[Models.Mail] = HtmlBuilder.main(dataEmails, created_date_string) val newCampaigns : DataFrame = finalEmails.groupBy("use...
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papillon

apache-spark

cassandra

spark-cassandra-connector

Votes: 0

Answers: 1

Latest Answer

You really don't need to do that this way: newCampaigns.as[Models.AggMails].foreach( aggmails => { HtmlBuilder.saveToCassandra(aggmails.id_account, aggmails.selected, aggmails.su...
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Alex Ott

Handling Datastax Java driver CqlSession in Spring Boot

Datastax Java driver documentation says to create a single instance of CqlSession for your Spring Boot application as building a session is a costly operation. I want to manage the CqlSession in an ef...
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JulieTheCoder

spring

spring-boot

cassandra

datastax

datastax-java-driver

Votes: 0

Answers: 1

Latest Answer

In my opinion, I suggest that you close the CqlSession yourself, since you know when you are executing as a specific request, and you know when to close it. If you use the annotation @PreDestroy, you ...
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