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

1. A client application creates an HDFS file named foo.txt with a replication factor of 3. Identify which best describes the file access rules in HDFS if the file has a single block that is stored on data nodes A, B and C?

A) Each data node locks the local file to prohibit concurrent readers and writers of the file.
B) The file will be marked as corrupted if data node B fails during the creation of the file.
C) Each data node stores a copy of the file in the local file system with the same name as the HDFS file.
D) The file can be accessed if at least one of the data nodes storing the file is available.

2. You want to Ingest log files Into HDFS, which tool would you use?

A) HCatalog
B) Ambari
C) Sqoop
D) Flume

3. Which two of the following are true about this trivial Pig program' (choose Two)

A) ABC has a schema associated with it
B) myfile is read from the user's home directory in HDFS
C) The contents of myfile appear on stdout
D) Pig assumes the contents of myfile are comma delimited

4. What does the following WebHDFS command do?
Curl -1 -L "http://host:port/webhdfs/v1/foo/bar?op=OPEN"

A) Read a file /foo/bar
B) Delete a directory /foo/bar
C) Make a directory /foo/bar
D) List a directory /foo

5. What data does a Reducer reduce method process?

A) All the data in a single input file.
B) All data produced by a single mapper.
C) All data for a given key, regardless of which mapper(s) produced it.
D) All data for a given value, regardless of which mapper(s) produced it.

Solutions: