What is output format in hadoop?
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did you maintain the hadoop cluster in-house or used hadoop in the cloud?
What problems can be addressed by using Zookeeper?
Whats is distributed cache in hadoop?
What is the default replication factor?
what is a datanode?
What are the different methods to run Spark over Apache Hadoop?
How can we change the split size if our commodity hardware has less storage space?
What alternate way does HDFS provides to recover data in case a Namenode
Input Split & Record Reader and what they do?
Does Hadoop requires RAID?
Can hive run without hadoop?
What is the heartbeat used for?