adplus-dvertising
frame-decoration

Question

The HDFS file system is temporarily unavailable whenever the HDFS ________ is down.

a.

DataNode

b.

NameNode

c.

ActionNode

d.

None of the mentioned

Posted under Hadoop

Answer: (b).NameNode

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. The HDFS file system is temporarily unavailable whenever the HDFS ________ is down.

Similar Questions

Discover Related MCQs

Q. Apache _______ is a serialization framework that produces data in a compact binary format.

Q. Avro schemas describe the format of the message and are defined using ______________

Q. The ____________ is an iterator which reads through the file and returns objects using the next() method.

Q. The ____________ class extends and implements several Hadoop-supplied interfaces.

Q. ____________ class accepts the values that the ModelCountMapper object has collected.

Q. The ________ method in the ModelCountReducer class “reduces” the values the mapper collects into a derived value.

Q. Which of the following works well with Avro?

Q. __________ tools is used to generate proxy objects in Java to easily work with the objects.

Q. Avro schemas are defined with _____

Q. __________ facilitates construction of generic data-processing systems and languages.

Q. With ______ we can store data and read it easily with various programming languages.

Q. ________ are a way of encoding structured data in an efficient yet extensible format.

Q. Thrift resolves possible conflicts through _________ of the field.

Q. Avro is said to be the future _______ layer of Hadoop.

Q. When using reflection to automatically build our schemas without code generation, we need to configure Avro using?

Q. We can declare the schema of our data either in a ______ file.

Q. Which of the following is a primitive data type in Avro?

Q. Avro supports ______ kinds of complex types.

Q. ________ are encoded as a series of blocks.

Q. ________ instances are encoded using the number of bytes declared in the schema.