Interview Questions on HDFS

  1. How does client modifies the files in HDFS?
  2. What is fsck?
  3. What is fetchdt?
  4. What is Balancer?
  5. What is checkpoint node?
  6. What is backup node?
  7. How does namenode & secondary namenode works?
  8. How to change Output file name rather than file names like part-00000, part-00001
  9. What is Distcp?
  10. How to manage FsImage & EditLog to prevant HDFS getting non-functional?.
  11. What is Staging?
  12. What is replication pipelining?