Is secondary namenode a substitute to the namenode?
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What is HDFS Block size? How is it different from traditional file system block size?
How to change replication factor of files already stored in HDFS?
What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?
How hdfa differs with nfs?
Where is the Mapper Output intermediate kay-value data stored ?
How did you debug your Hadoop code ?
How can one increase replication factor to a desired value in Hadoop?
How blocks are distributed among all data nodes for a particular chunk of data?
Where is the Mapper Output stored?
How to change from su to cloudera?
Define a namenode?
Can NameNode and DataNode be a commodity hardware?