Un-Answered Questions { MapReduce }

what is a Task Tracker in Hadoop?

395


what are the most common input formats defined in Hadoop?

361


what daemons run on a master node and slave nodes?

389


What is Text Input Format?

385


what is WebDAV in Hadoop?

443


What platform and Java version is required to run Hadoop?

386


what are the three modes in which Hadoop can be run?

363


How data is spilt in Hadoop?

388


what is storage and compute nodes?

413


When Namenode is down what happens to job tracker?

451


what are the main configuration parameters that user need to specify to run Mapreduce Job ?

368


what is "map" and what is "reducer" in Hadoop?

368


What is Shuffling and Sorting in a MapReduce?

410


What is the difference between Hadoop and RDBMS?

360


how can you check whether Namenode is working beside using the jps command?

405