Local mode vs cluster mode in Apache Spark - Quick Revision & Key Differences

Recall & Review

beginner

What is Local mode in Apache Spark?

Local mode runs Spark on a single machine using one or more threads. It is useful for development, testing, and learning because it does not require a cluster setup.

beginner

What is Cluster mode in Apache Spark?

Cluster mode runs Spark on multiple machines (nodes) working together. It allows processing large datasets by distributing tasks across many computers.

beginner

Name one advantage of Local mode over Cluster mode.

Local mode is easier to set up and faster to start because it runs on a single machine without needing a cluster.

beginner

Why use Cluster mode instead of Local mode?

Cluster mode is used to handle big data that cannot fit or be processed efficiently on one machine. It uses many machines to speed up processing.

intermediate

How does Spark distribute work in Cluster mode?

Spark splits data into parts and sends these parts to different machines (workers). Each machine processes its part, then results are combined.

Which mode runs Spark on a single machine?

A Cloud mode

B Cluster mode

C Distributed mode

D Local mode

Local mode runs Spark on one machine using threads.

What is a key benefit of Cluster mode?

A Runs faster on a single machine

B Processes large datasets using multiple machines

C Requires no setup

D Uses less memory

Cluster mode uses many machines to handle big data efficiently.

Which mode is best for learning and testing Spark?

A Cluster mode

B Cloud mode

C Local mode

D Hybrid mode

Local mode is simple and good for learning and testing.

In Cluster mode, how is data processed?

A Data is split and processed on multiple machines

B Data is processed only on the driver node

C Data is processed manually

D All data processed on one machine

Cluster mode splits data and processes it across many machines.

Which of these is NOT true about Local mode?

A Requires a cluster setup

B Good for small datasets

C Runs on a single machine

D Faster to start than cluster mode

Local mode does NOT require a cluster setup.

Explain the main differences between Local mode and Cluster mode in Apache Spark.

Think about where Spark runs and why you would choose each mode.

Describe a scenario where you would prefer to use Local mode over Cluster mode.

Consider ease of setup and dataset size.