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Compaction Overview Advanced Quiz

S301: Scylla Operations Compaction Strategies Compaction Overview Deep Dive Compaction Overview Advanced Quiz

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Question 1 of 4

1. Question
What does LSM stand for and how is it used in Scylla?
- Log-Structured Merge-Tree, used for Scylla persistent storage
- Log-Structured Merge-Tree, used for High Availability
- Living Standards Measure, Scylla storage metrics
- Linux Security Modules, used by Scylla security functions
- Linux Software Map, text format used by Scylla configurations
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Question 2 of 4

2. Question
When is an SSTable created and updated? mark the wrong answers below (could be more than one)
- Created when MemTable is flushed to disk
- Created during compaction from other SSTables
- Updated as a result of a CQL UPDATE operation
- Updated as a result of a CQL DELETE operation
- SSTables are immutable, and once created are never updated
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Question 3 of 4

3. Question
Tombstones are markers for deleted values. How and when are Tombstones cleaned?
- Never. If they would a deleted value can come back to life
- Only on a major compaction
- On every minor compaction
- On compaction, but only after GC Grace Period
- During a repair
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Question 4 of 4

4. Question
What is the difference between Compaction Strategies?
- The order and way they select SSTable to compact
- The file format of the SSTable (mv, la, lk etc)
- The way they are using the GC Grace Period
- In the way, they sync and stream the data between Scylla nodes
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Course Home Expand All

1 Topic | 1 Quiz

Admin Procedures and Tools

8 Topics | 3 Quizzes

Nodetool and Logs

The cassandra-stress Tool

Bootstrap a New Node into a Cluster

Adding and Removing a Data Center

Troubleshooting

Scylla Monitoring

10 Topics | 2 Quizzes

Monitoring Overview

Advanced Monitoring Overview

Errors, CQL Optimizations

Replica Imbalance

Hot Partition, Large Partition, Single Node Check

Memory Management

Disk Scheduling Part 1

Disk Scheduling Part 2

Monitoring Hands-On Lab

Migrating to Scylla

2 Topics | 1 Quiz

Migrating to Scylla

Migrating to Scylla Hands-On

Compaction Strategies

8 Topics | 5 Quizzes

Compaction Fundamentals

Compaction Overview Deep Dive

Size Tiered and Leveled Compaction Strategies STCS + LCS

Size Tiered Compaction Strategy (STCS) Deep Dive

Leveled Compaction Strategy (LCS) Deep Dive

Time-Window Compaction Strategy (TWCS)

Incremental Compaction Strategy ICS

Incremental Compaction Strategy (ICS) Deep Dive

Scylla Manager, Repair and Tombstones

8 Topics | 2 Quizzes

Repair Introduction

Manager Overview

Repair Using Scylla Manager

Manager Deep Dive

Cluster Backup Using Scylla Manager

Monitoring and Manager Lab

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9 Topics | 3 Quizzes

Security Overview

Security Identities

Security Authentication

Security Roles and Permissions Overview

Security RBAC Deep Dive

Security Encryption Overview and Encryption in Transit

Security Encryption at Rest

Security Auditing

Security Minimize Network Exposure and Summary

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3 Topics | 3 Quizzes

Scylla Deployment Best Practices: General Useful Advice

Scylla Deployment Best Practices: Hardware, Storage, Cores and Number of Nodes

Scylla Deployment Best Practices: Racks and Setup

1 Topic

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12 Topics | 1 Quiz

K8 Operator – Why do we Need the Scylla Operator

K8 Operator – What is the Scylla Operator

K8 Operator – Introduction to Scylla Operator

K8 Operator – Operator Deployment Demo

K8 Operator – Monitoring and Scylla Deployment Demo Part One

K8 Operator – Monitoring and Scylla Deployment Demo Part Two

K8 Operator – Operator Best Practices

K8 Operator – Scylla + Operator Best Practices

K8 Operator – Alternator Deployment Demo, Tic Tac Toe

K8 Operator – Maintenance with Scylla Manager

K8 Operator – Tips and Troubleshooting

K8 Operator – Common Problems and How to Solve Them

Using Spark with Scylla

6 Topics | 2 Quizzes

Spark – Intro and Connecting

Spark – Data Processing

Spark – Effective Big Data and Spark Cluster Size

Spark – Scylla Migrator

Spark – Hands on Intro

Scylla and Spark Lab

Change Data Capture (CDC)

4 Topics | 2 Quizzes

Change Data Capture (CDC) Overview

CDC Consuming the Data

CDC Under the Hood

Kafka and Scylla

8 Topics | 1 Quiz

Kafka – Overview

Kafka – Quickstart

Kafka – Scylla Sink Connector

Kafka – Scylla Sink Connector Demo

Kafka – Scylla CDC Overview

Kafka – Scylla CDC Demo

Kafka – Scylla CDC Source Connector

Kafka – Scylla CDC Source Connector Demo

Workload Prioritization

3 Topics | 4 Quizzes

Workload Prioritization Overview

Workload Prioritization Implementation and Configuration

Workload Prioritization Performance and an Example

Return to S301: Scylla Operations

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