Explain the overview of hadoop history breifly?
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Input Split & Record Reader and what they do?
What is the default block size in hdfs?
How can you overwrite the replication factors in HDFS?
Can Apache Kafka be used without Zookeeper?
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
Which files are used by the startup and shutdown commands?
what is a datanode?
Are Namenode and job tracker on the same host?
What stored in HDFS?
What is a Secondary Namenode? Is it a substitute to the Namenode?
What are the additional benefits YARN brings in to Hadoop?
What is the function of NodeManager?