Related InterviewSolutions

• Why is Checkpointing Important in Hadoop?
• Can Hadoop handle streaming data?
• What is speculative execution in Hadoop?
• What are Problems with small files and HDFS?
• Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
• Consider case scenario: In M/R system, - HDFS block size is 64 MB- Input format is FileInputFormat– We have 3 files of size 64K, 65Mb and 127MbHow many input splits will be made by Hadoop framework?
• What is a Combiner?
• What does "file could only be replicated to 0 nodes, instead of 1" mean?
• What happens when two clients try to write into the same HDFS file?
• Can we search for files using wildcards?