What is a block in HDFS? what is the default size in Hadoop 1 and Hadoop 2? Can we change the block size?1
How to restart NameNode or all the daemons in Hadoop HDFS?
Explain how can you debug hadoop code?
What is throughput? How does HDFS provide good throughput?
What is the use of illustrate in pig?
What happen when namenode enters in safemode in hadoop?
What is the purpose of DataNode block scanner?
How Pig programming gets converted into MapReduce jobs?
Can you list some useful zookeeper tools?
Can you define oozie?
Replication causes data redundancy then why is is pursued in HDFS?
what are views in Hive?
Explain HCatalog Create Table CLI along with its syntax?
Specify some uses of HBase?
Replication causes data redundancy and consume a lot of space, then why is it pursued in hdfs?
What is parallelize in spark?