Explain a simple Map/Reduce problem.
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explain Metadata in Namenode?
What is rack-aware replica placement policy?
What is Safemode in Apache Hadoop?
Explain Erasure Coding in Apache Hadoop?
Which command is used for the retrieval of the status of daemons running the hadoop cluster?
how can we change Replication Factor?
Explain the difference between NameNode
What is difference between regular file system and HDFS?
What is the problem with HDFS and streaming data like logs
Mention what is the use of Context Object?
Explain what is sqoop in Hadoop ?
Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?