Cloudera Certified Administrator for Apache Hadoop (CCAH)

Individuals who earn a Cloudera Certified Administrator for Apache Hadoop (CCAH) certification have demonstrated the core system administrator skills sought by companies and organizations deploying Apache Hadoop.

To earn a CCAH Cloudera Certified Administrator for Apache Hadoop certification, candidates must pass the following exam:

Cloudera Certified Administrator for Apache Hadoop (CCA-500)

CCA certifications are valid for two years.


Exam Sections and Blueprint

1. HDFS (17%)

  • Describe the function of HDFS daemons
  • Describe the normal operation of an Apache Hadoop cluster, both in data storage and in data processing
  • Identify current features of computing systems that motivate a system like Apache Hadoop
  • Classify major goals of HDFS Design
  • Given a scenario, identify appropriate use case for HDFS Federation
  • Identify components and daemon of an HDFS HA-Quorum cluster
  • Analyze the role of HDFS security (Kerberos)
  • Determine the best data serialization choice for a given scenario
  • Describe file read and write paths
  • Identify the commands to manipulate files in the Hadoop File System Shell

2. YARN and MapReduce version 2 (MRv2) (17%)

  • Understand how upgrading a cluster from Hadoop 1 to Hadoop 2 affects cluster settings
  • Understand how to deploy MapReduce v2 (MRv2 / YARN), including all YARN daemons
  • Understand basic design strategy for MapReduce v2 (MRv2)
  • Determine how YARN handles resource allocations
  • Identify the workflow of MapReduce job running on YARN
  • Determine which files you must change and how in order to migrate a cluster from MapReduce version 1 (MRv1) to MapReduce version 2 (MRv2) running on YARN

3. Hadoop Cluster Planning (16%)

  • Principal points to consider in choosing the hardware and operating systems to host an Apache Hadoop cluster
  • Analyze the choices in selecting an OS
  • Understand kernel tuning and disk swapping
  • Given a scenario and workload pattern, identify a hardware configuration appropriate to the scenario
  • Given a scenario, determine the ecosystem components your cluster needs to run in order to fulfill the SLA
  • Cluster sizing: given a scenario and frequency of execution, identify the specifics for the workload, including CPU, memory, storage, disk I/O
  • Disk Sizing and Configuration, including JBOD versus RAID, SANs, virtualization, and disk sizing requirements in a cluster
  • Network Topologies: understand network usage in Hadoop (for both HDFS and MapReduce) and propose or identify key network design components for a given scenario

4. Hadoop Cluster Installation and Administration (25%)

  • Given a scenario, identify how the cluster will handle disk and machine failures
  • Analyze a logging configuration and logging configuration file format
  • Understand the basics of Hadoop metrics and cluster health monitoring
  • Identify the function and purpose of available tools for cluster monitoring
  • Be able to install all the ecoystme components in CDH 5, including (but not limited to): Impala, Flume, Oozie, Hue, Cloudera Manager, Sqoop, Hive, and Pig
  • Identify the function and purpose of available tools for managing the Apache Hadoop file system

5. Resource Management (10%)

  • Understand the overall design goals of each of Hadoop schedulers
  • Given a scenario, determine how the FIFO Scheduler allocates cluster resources
  • Given a scenario, determine how the Fair Scheduler allocates cluster resources under YARN
  • Given a scenario, determine how the Capacity Scheduler allocates cluster resources

6. Monitoring and Logging (15%)

  • Understand the functions and features of Hadoop’s metric collection abilities
  • Analyze the NameNode and JobTracker Web UIs
  • Understand how to monitor cluster daemons
  • Identify and monitor CPU usage on master nodes
  • Describe how to monitor swap and memory allocation on all nodes
  • Identify how to view and manage Hadoop’s log files
  • Interpret a log file

Recommended training for this certification