Can you execute Hadoop dfs Commands from Hive CLI? How?

1181

---

List the various options available with the Hive command?

918

---

Why Mapreduce output written in local disk?

1021

---

What is identity mapper and reducer? In which cases can we use them?

1022

---

Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?

1222

---

What is the Hadoop MapReduce API contract for a key and value Class?

1315

---

Explain the Reducer's Sort phase?

892

---

What can be optimum value for Reducer?

975

---

When is the reducers are started in a MapReduce job?

883

---

What is the input type/format in MapReduce by default?

1087

---

What is the default value of map and reduce max attempts?

946

---

What is the Reducer used for?

945

---

What comes in Hadoop 2.0 and MapReduce V2 YARN

1016

---

Why comparison of types is important for MapReduce?

983

---

What is the InputSplit in map reduce ?

1047

---