What happens to job tracker when namenode is down?
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What is the default replication factor?
What is the communication channel between client and namenode/datanode?
Give the use of the bootstrap panel.
what are Task Tracker and Job Tracker?
What is the purpose of DataNode block scanner?
Name some companies that use Hadoop?
how can we change Replication Factor?
What are the limitations of importing RDBMS tables into Hcatalog directly?
How to enable/configure the compression of map output data in hadoop?
Does this lead to security issues?
What is unstructured data?
How can we change the split size if our commodity hardware has less storage space?