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?

148

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?

147

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 }

What is a block in HDFS, why block size 64MB?

Why is block size set to 128 MB in HDFS?

List the various HDFS daemons in HDFS cluster?

What is Fault Tolerance in HDFS?

Tell me two most commonly used commands in HDFS?

Explain hdfs?

What happens when two clients try to access the same file on HDFS?

183

What do you mean by the high availability of a namenode? How is it achieved?

How does a client read/write data in HDFS?

Mention what is the difference between hdfs and nas?

How is indexing done in Hadoop HDFS?

What is a rack awareness algorithm?

Write the command to copy a file from linux to hdfs?

Will various customers write into an hdfs record simultaneously?

What happens if the block on Hadoop HDFS is corrupted?

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