HADOOP-PR000007試験無料問題集「Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) 認定」

A. The code does not execute successfully because D is not a valid relation

B. The Output Of the DUMP D command IS (M,{(M,62.95102),(M,38,95111)})

C. The output of the dump d command is (M, {(38,95in),(62,95i02)})

D. The code executes successfully but there is not output because the D relation is empty

A. Hive dynamically defines the schema of the table based on the FROM clause of a SELECT query.

B. Records can only be added to the table using the Hive INSERT command.

C. When the table is dropped, the underlying folder in HDFS is deleted.

D. Hive dynamically defines the schema of the table based on the format of the underlying data.

A. ZooKeeper

B. QuorumManager

C. ZKFailoverController

D. JournalNode

A. 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.

B. 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.

C. 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).

D. 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.

A. Processes all client requests and block reports from the appropriate DataNodes.

B. Receives the same block reports as the active NameNode.

C. Communicates directly with the active NameNode to maintain the state of the active NameNode.

D. Runs on the same machine and shares the memory of the active NameNode.

A. combine

B. map

C. configure

D. init

A. All data for a given key, regardless of which mapper(s) produced it.

B. All data produced by a single mapper.

C. All the data in a single input file.

D. All data for a given value, regardless of which mapper(s) produced it.

A. Is a relational database

B. Offers real-time queries and row level updates

C. Allows you to define a structure for your unstructured Big Data

D. Useful for data analysts familiar with SQL who need to do ad-hoc queries