- What is Hadoop, and what are its key components?
- Explain the Hadoop Distributed File System (HDFS) architecture.
- What is MapReduce, and how does it work in Hadoop?
- What are the differences between Hadoop 1.x and Hadoop 2.x (YARN)?
- How do you install and configure Hadoop on a cluster?
- What is the purpose of Hadoop streaming?
- How does Hadoop ensure fault tolerance?
- Explain the role of NameNode and DataNode in HDFS.
- What are the different schedulers available in Hadoop YARN?
- What is the purpose of Hadoop ecosystem components like Hive, Pig, and HBase?
- How do you handle unstructured data in Hadoop?
- Explain the concept of Hadoop ecosystem federation.
- How does Hadoop handle data locality optimization?
- What are the differences between Apache Hadoop and Cloudera Distribution of Hadoop (CDH)?
- How do you secure a Hadoop cluster?
- What is speculative execution in Hadoop? How does it work?
- Explain the concept of block size in Hadoop.
- What are the advantages and limitations of Hadoop?
- How do you monitor and troubleshoot a Hadoop cluster?
- What are some common use cases for Hadoop in big data analytics?
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