Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) - HADOOP-PR000007 Exam Practice Test

A. hadoop fs -Is foo

B. hadoop fs -get foo LocalFoo

C. hadoop fs -put foo LocalFoo

D. hadoop -cp foo LocalFoo

A. The client contacts the NameNode for the block location(s). The NameNode then queries the
DataNodes for block locations. The DataNodes respond to the NameNode, and the NameNode redirects
the client to the DataNode that holds the requested data block(s). The client then reads the data directly
off the DataNode.

B. The client queries all DataNodes in parallel. The DataNode that contains the requested data responds
directly to the client. The client reads the data directly off the DataNode.

C. The client contacts the NameNode for the block location(s). The NameNode contacts the DataNode
that holds the requested data block. Data is transferred from the DataNode to the NameNode, and then
from the NameNode to the client.

D. The client queries the NameNode for the block location(s). The NameNode returns the block location(s)
to the client. The client reads the data directory off the DataNode(s).

A. The contents of myfile appear on stdout

B. ABC has a schema associated with it

C. myfile is read from the user's home directory in HDFS

D. Pig assumes the contents of myfile are comma delimited

A. The keys given to a reducer are in sorted order but the values associated with each key are in no
predictable order

B. Both the keys and values passed to a reducer always appear in sorted order.

C. The keys given to a reducer aren't in a predictable order, but the values associated with those keys
always are.

D. Neither keys nor values are in any predictable order.

A. HDFS latency.

B. Standardize on a single MapReduce API.

C. Single point of failure in the NameNode.

D. Ability to run frameworks other than MapReduce, such as MPI.

E. Reduce complexity of the MapReduce APIs.

F. Resource pressure on the JobTracker.

A. The logevents relation represents the data from the my.log file, using a tab as the parsing delimiter

B. The logevents relation represents the data from the my.log file, using a comma as the parsing delimiter

C. The first field of logevents must be a properly-formatted date string or table return an error

D. The statement is not a valid Pig command