How many instances of JobTracker can run on a Hadoop Cluser?

1030

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What's the best way to copy files between HDFS clusters?

1364

---

Can Apache Kafka be used without Zookeeper?

1042

---

What is Your Cluster size ?

1445

---

What is the default block size in hdfs?

1051

---

What are active and passive "NameNodes"?

1476

---

It can be possible that a Job has 0 reducers?

971

---

What are combiners and its purpose?

943

---

On what basis Namenode will decide which datanode to write on?

1273

---

Can Hadoop be compared to NOSQL database like Cassandra?

920

---

What is a Secondary Namenode? Is it a substitute to the Namenode?

1040

---

what are relational operations in pig latin?

874

---

What is the difference between SQL and NoSQL?

1088

---

What are the additional benefits YARN brings in to Hadoop?

974

---

what are the steps involved in decommissioning removing

1036

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