Hadoop distributions (Cloudera, Hortonworks) - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Key difference between Cloudera and Hortonworks distributions

Which of the following best describes a main difference between Cloudera and Hortonworks Hadoop distributions?

A Hortonworks supports only MapReduce, Cloudera supports only Spark.

B Cloudera includes proprietary management tools, while Hortonworks is fully open source.

C Cloudera is based on Apache Hadoop 1.x, Hortonworks on Hadoop 3.x.

D Hortonworks requires a paid license, Cloudera is free.

💡 Hint

Think about the licensing and management tools each distribution offers.

Cloudera offers proprietary management and monitoring tools, while Hortonworks focuses on fully open source components.

❓ data_output

intermediate

Output of Hadoop version command in Cloudera vs Hortonworks

What output would you expect when running hadoop version on a Cloudera distribution compared to Hortonworks?

Hadoop

hadoop version

A Both show identical Apache Hadoop version numbers without any tags.

B Neither distribution supports the 'hadoop version' command.

C Cloudera shows a version with 'CDH' tag; Hortonworks shows 'HDP' tag.

D Cloudera shows 'HDP' tag; Hortonworks shows 'CDH' tag.

💡 Hint

Look for distribution-specific version identifiers.

Cloudera versions include 'CDH' (Cloudera Distribution Hadoop) in the version output, Hortonworks uses 'HDP' (Hortonworks Data Platform).

🔧 Debug

advanced

Identify the cause of a service failure in Hortonworks

You see the following error in Hortonworks Data Platform logs: Service failed to start due to missing dependency: Ambari Metrics. What is the most likely cause?

A Cloudera Manager is conflicting with Ambari Metrics.

B HDFS service is down, causing Ambari Metrics to fail.

C YARN resource manager is overloaded.

D Ambari Metrics service is not installed or not running.

💡 Hint

Think about what the error message says about dependencies.

Ambari Metrics is a required service in Hortonworks for monitoring. If it is missing or stopped, dependent services fail to start.

🚀 Application

advanced

Choosing a Hadoop distribution for a company with strict open source policy

A company requires a Hadoop distribution that is 100% open source with no proprietary components. Which distribution should they choose?

A Hortonworks, because it is fully open source without proprietary additions.

B Neither, both have proprietary components.

C Cloudera, because it offers proprietary tools for better management.

D Use Apache Hadoop directly, not a distribution.

💡 Hint

Consider the licensing and source code openness of each distribution.

Hortonworks is known for being fully open source, while Cloudera includes proprietary management tools.

🧠 Conceptual

expert

Impact of Cloudera and Hortonworks merger on Hadoop ecosystem

After the merger of Cloudera and Hortonworks, what is the expected impact on the Hadoop ecosystem?

A Unified platform combining proprietary and open source tools, simplifying management.

B Removal of all open source components in favor of proprietary software.

C Splitting into two separate competing distributions.

D Complete abandonment of Hadoop in favor of cloud-only solutions.

💡 Hint

Think about the goal of merging two major distributions.

The merger aimed to combine strengths of both distributions, offering a unified platform with both proprietary and open source tools.