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

1179

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List the various options available with the Hive command?

914

---

Why Mapreduce output written in local disk?

1009

---

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

1015

---

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?

1303

---

Explain the Reducer's Sort phase?

890

---

What can be optimum value for Reducer?

956

---

When is the reducers are started in a MapReduce job?

875

---

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

1078

---

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

940

---

What is the Reducer used for?

935

---

What comes in Hadoop 2.0 and MapReduce V2 YARN

1011

---

Why comparison of types is important for MapReduce?

968

---

What is the InputSplit in map reduce ?

1036

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