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Hortonworks Apache-Hadoop-Developer Exam Syllabus Topics:

Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:

1. You use the hadoop fs -put command to write a 300 MB file using and HDFS block size of 64 MB. Just after this command has finished writing 200 MB of this file, what would another user see when trying to access this life?

A) They would see Hadoop throw an ConcurrentFileAccessException when they try to access this file.
B) They would see the current of the file through the last completed block.
C) They would see no content until the whole file written and closed.
D) They would see the current state of the file, up to the last bit written by the command.

2. Which one of the following statements describes a Hive user-defined aggregate function?

A) Operates on a single input row and produces a single row as output
B) Operates on multiple input rows and produces a table as output
C) Operates on a single input row and produces a table as output
D) Operates on multiple input rows and creates a single row as output

3. Which process describes the lifecycle of a Mapper?

A) The TaskTracker spawns a new Mapper to process all records in a single input split.
B) The TaskTracker spawns a new Mapper to process each key-value pair.
C) The JobTracker spawns a new Mapper to process all records in a single file.
D) The JobTracker calls the TaskTracker's configure () method, then its map () method and finally its close () method.

4. Which HDFS command uploads a local file X into an existing HDFS directory Y?

A) hadoop fs-put X Y
B) hadoop fs -localPut X Y
C) hadoop scp X Y
D) hadoop fs -get X Y

5. Given the following Hive commands:

Which one of the following statements Is true?

A) The file mydata.txt is copied to a subfolder of /apps/hive/warehouse
B) The file mydata.txt is moved to a subfolder of /apps/hive/warehouse
C) The file mydata.txt does not move from Its current location in HDFS
D) The file mydata.txt is copied into Hive's underlying relational database 0.

Solutions: