How does data latency in batch processing compare to real-time processing?

  • Batch processing and real-time processing have similar latency.
  • Batch processing typically has higher latency than real-time processing.
  • Latency is not a consideration in data processing.
  • Real-time processing typically has higher latency than batch processing.
Batch processing typically has higher latency than real-time processing. In batch processing, data is collected and processed in predefined intervals, leading to delays, while real-time processing handles data as it arrives, reducing latency.

In a case where a Hadoop cluster is running multiple diverse jobs, how should resource allocation be optimized for balanced performance?

  • Capacity Scheduler
  • Dynamic Resource Allocation
  • Fair Scheduler
  • Static Resource Allocation
In a scenario with multiple diverse jobs, optimizing resource allocation for balanced performance involves using the Fair Scheduler. The Fair Scheduler dynamically allocates resources among jobs based on demand, ensuring fair distribution and preventing resource starvation for any specific job type.

In Hadoop, ____ is a key indicator of the cluster's ability to process data efficiently.

  • Data Locality
  • Data Replication
  • Fault Tolerance
  • Task Parallelism
Data Locality is a key indicator of the cluster's ability to process data efficiently in Hadoop. It refers to the practice of placing computation close to the data, reducing the need for data movement across the network. This enhances performance by maximizing the use of locally stored data.

Advanced disaster recovery in Hadoop may involve using ____ for cross-cluster replication.

  • DistCp
  • Flume
  • Kafka
  • Sqoop
Advanced disaster recovery in Hadoop may involve using DistCp (Distributed Copy) for cross-cluster replication. DistCp is a Hadoop tool specifically designed for efficiently copying large amounts of data between clusters. It can be employed to replicate data for disaster recovery purposes, ensuring data consistency across different Hadoop clusters.

How does the Hadoop Federation feature contribute to disaster recovery and data management?

  • Enables Real-time Processing
  • Enhances Data Security
  • Improves Fault Tolerance
  • Optimizes Job Execution
The Hadoop Federation feature contributes to disaster recovery and data management by improving fault tolerance. Hadoop Federation allows the distribution of namespace across multiple NameNodes, reducing the risk of a single point of failure. In the event of a NameNode failure, other NameNodes can continue to operate, contributing to a more robust disaster recovery strategy.

____ are key to YARN's ability to support multiple processing models (like batch, interactive, streaming) on a single system.

  • ApplicationMaster
  • DataNodes
  • Resource Containers
  • Resource Pools
Resource Containers are key to YARN's ability to support multiple processing models on a single system. They encapsulate the allocated resources and are used to execute tasks across the cluster in a flexible and efficient manner.

Apache Hive organizes data into tables, where each table is associated with a ____ that defines the schema.

  • Data File
  • Data Partition
  • Hive Schema
  • Metastore
Apache Hive uses a Metastore to store the schema information for tables. The Metastore is a centralized repository that stores metadata, including table schemas, partition information, and storage location. This separation of metadata from data allows for better organization and management of data in Hive.

____ in Avro is crucial for ensuring data compatibility across different versions in Hadoop.

  • Protocol
  • Registry
  • Schema
  • Serializer
The use of a Schema Registry in Avro is crucial for ensuring data compatibility across different versions. It acts as a central repository for storing and managing schemas, allowing different components in a Hadoop ecosystem to access and interpret data consistently.

In a Hadoop cluster, ____ is a key component for managing and monitoring system health and fault tolerance.

  • JobTracker
  • NodeManager
  • ResourceManager
  • TaskTracker
The ResourceManager is a key component in a Hadoop cluster for managing and monitoring system health and fault tolerance. It manages the allocation of resources and schedules tasks across the cluster, ensuring efficient resource utilization and fault tolerance.

In a scenario where data processing needs to be scheduled after data loading is completed, which Oozie feature is most effective?

  • Bundle
  • Coordinator
  • Decision Control Nodes
  • Workflow
The most effective Oozie feature in this scenario is the Coordinator. Coordinators in Oozie allow you to define and manage time-based schedules for recurring jobs. They are well-suited for situations where data processing needs to be scheduled after data loading is completed, ensuring timely execution based on specified intervals.