Explain how you can reduce churn in isr? When does broker leave the isr?
What are 'slaves' and 'masters' in Hadoop?
What is a map in pig?
What is map/reduce job in hadoop?
What is the relationship between Job and Task in Hadoop?
what needs to be taken care while adding a Column?
What are the side effects of not running a secondary name node?
How is Ambari different from ZooKeeper?
What are the parameters used to create a keyspace?
What is lineage graph?
Explain Erasure Coding in Apache Hadoop?
Web-ui shows that half of the datanodes are in decommissioning mode. What does that mean? Is it safe to remove those nodes from the network?
Explain how is hadoop different from other data processing tools?
What do you mean by the NameNode High Availability in hadoop?
What are the three steps involved in big data?