Explain what if rack 2 and datanode fails?
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What is the purpose of DataNode block scanner?
how can we change Replication Factor?
How can you connect an application
what are the steps involved in decommissioning removing
what is a datanode?
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
How can we change the split size if our commodity hardware has less storage space?
What is HDFS ? How it is different from traditional file systems?
Is hadoop based on google mapreduce?
What are combiners and its purpose?
How does NameNode tackle DataNode failures?
what is difference between int and intwritable?
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