Big Data | Hadoop Interview Questions and Answers

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Q: Big Data Interview Questions for Freshers and Experienced

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Hadoop Hive Interview Question_Finding Unique URLs Using Hive

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Scenario Based Hadoop Interview Question

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Hadoop Interview Questions PDF

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Top 250 Hadoop Interview Questions and Answers

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Why is Checkpointing Important in Hadoop?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Can Hadoop handle streaming data?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: What is speculative execution in Hadoop?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: What are Problems with small files and HDFS?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: How many input splits will be made by Hadoop framework?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: What is a Combiner in HDFS

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: What does "file could only be replicated to 0 nodes, instead of 1" mean?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: What happens when two clients try to write into the same HDFS file?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Can we search for files using wildcards?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: How to make a large cluster smaller by taking out some of the nodes?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: What happens if one Hadoop client renames a file or a directory containing this file while another client is still writing into it?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Does the name-node stay in safe mode till all under-replicated files are fully replicated?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: How do you gracefully stop a running job?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: The requirement is to add a new data node to a running Hadoop cluster; how do I start services on just one data node?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Is there a hdfs command to see available free space in hdfs

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Which file does the Hadoop-core configuration?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: What is rack awareness in HDFS

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Default replication factor to a file is 3.

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Copy a directory from one node in the cluster to another

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Why ‘Reading‘ is done in parallel and ‘Writing‘ is not in HDFS?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Explain how do ‘map’ and ‘reduce’ works.

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: What is a Secondary Namenode? Is it a substitute to the Namenode?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: What is a rack in HDFS

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: What is the communication channel between client and namenode/datanode?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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Q: Are job tracker and task trackers present in separate machines?

asked Feb 23, 2020 in Big Data | Hadoop by rahuljain1

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