Apache HDFS Hadoop Distributed File System Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache HDFS Hadoop Distributed File System Interview Questions

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How does data transfer happen from hdfs to hive?

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What is non-dfs used in hdfs web console

If the source data gets updated every now and then, how will you synchronize the data in hdfs that is imported by sqoop?

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How to use hdfs put command for data transfer from flume to hdfs?

What are tools available to send the streaming data to hdfs?

how does hdfs ensure data integrity of data blocks stored in hadoop hdfs?

Compare hbase vs hdfs?

Which classes are used by the hive to read and write hdfs files?

Is the hdfs block size reduced to achieve faster query results?

Why does hive not store metadata information in hdfs?

While processing data from hdfs, does it execute code near data?

What is a task tracker?

Explain the difference between nas and hdfs?

What is a job tracker?

What is the difference betwaeen mapreduce engine and hdfs cluster?

Un-Answered Questions { Apache HDFS Hadoop Distributed File System }

Can you define a block and block scanner in hdfs?

Explain what is heartbeat in hdfs?

How does a client read/write data in HDFS?

Explain what happens if, during the PUT operation, HDFS block is assigned a replication factor 1 instead of the default value 3?

How HDFS helps NameNode in scaling in Hadoop?

Why rack awareness algorithm is used in hadoop?

Explain how HDFS communicates with Linux native file system?

Why does hive not store metadata information in hdfs?

What do you mean by meta information in hdfs?

How data or file is written into HDFS?

What is secondary namenode?

What is a block?

Does HDFS allow a client to read a file which is already opened for writing in hadoop?

What is the difference between an input split and hdfs block?

Why HDFS stores data using commodity hardware despite the higher chance of failures?

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