Question

How many input splits will be made by Hadoop framework?

Answer 1

Hadoop will make 5 splits as follows -

- 1 split for 64K files

- 2 splits for 65MB files

- 2 splits for 127MB files

Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

It will restart the task again on some other TaskTracker and only if the task fails more than four ( the default setting and can be changed) times will it kill the job.