Free Online Certification Courses – Learn Today. Lead Tomorrow. › Forums › Apache Hadoop This forum has 545 topics, 888 replies, and was last updated 5 years, 7 months ago by DataFlair Team. Viewing 15 topics - 16 through 30 (of 545 total) ← 1 2 3 … 35 36 37 → Topic Voices Posts Last Post Why Hadoop? What are the features of Hadoop? Started by: DataFlair Team 1 3 5 years, 7 months ago DataFlair Team How to plan disaster recovery in Hadoop cluster Started by: DataFlair Team 1 4 5 years, 7 months ago DataFlair Team What is Reducer in MapReduce? Started by: DataFlair Team 1 2 5 years, 7 months ago DataFlair Team What are different modes for metastore deployment in Hive? Started by: DataFlair Team 1 2 5 years, 7 months ago DataFlair Team What is small file problem in Hadoop? Started by: DataFlair Team 1 4 5 years, 7 months ago DataFlair Team Describe Read operation in HDFS? Started by: DataFlair Team 1 4 5 years, 7 months ago DataFlair Team Explain Distributed Cache in Apache Hadoop? Started by: DataFlair Team 1 3 5 years, 7 months ago DataFlair Team What is Speculative execution in Hadoop? Why is it important? Started by: DataFlair Team 1 4 5 years, 7 months ago DataFlair Team What is combiner in MapReduce? Started by: DataFlair Team 1 4 5 years, 7 months ago DataFlair Team What is difference between reducer and combiner in Hadoop MapReduce? Started by: DataFlair Team 1 3 5 years, 7 months ago DataFlair Team What is Input Split in Hadoop MapReduce? Started by: DataFlair Team 1 3 5 years, 7 months ago DataFlair Team How to calculate number of mappers in Hadoop? Started by: DataFlair Team 1 4 5 years, 7 months ago DataFlair Team What is active and passive NameNode in Apache Hadoop? Started by: DataFlair Team 1 3 5 years, 7 months ago DataFlair Team How indexing is done in Hadoop? Started by: DataFlair Team 1 3 5 years, 7 months ago DataFlair Team How many Reducers run for a MapReduce job? Started by: DataFlair Team 1 3 5 years, 7 months ago DataFlair Team Viewing 15 topics - 16 through 30 (of 545 total) ← 1 2 3 … 35 36 37 → You must be logged in to create new topics. Log In Username: Password: Keep me signed in Signup / Login with Google Log In