最新のApache-Hadoop-Developer問題集で試験を準備する

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

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

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

• A. Flume
• B. Ambari
• C. HCatalog
• D. Sqoop

Given the following Hive command:

Which one of the following statements is true?

• A. The files in the mydata folder do not move from their current location In HDFS
• B. The files in the mydata folder are copied to a subfolder of /apps/hlve/warehouse
• C. The files in the mydata folder are moved to a subfolder of /apps/hive/wa re house
• D. The files in the mydata folder are copied into Hive's underlying relational database

Assuming the following Hive query executes successfully:

Which one of the following statements describes the result set?

• A. A frequency distribution of the top 80 words that follow the subsequence "you are" in the lines column of the inputdata table.
• B. An 80-value ngram of sentences that contain the words "you" or "are" in the lines column of the inputdata table.
• C. A trigram of the top 80 sentences that contain "you are" followed by a null space in the lines column of the inputdata table.
• D. A bigram of the top 80 sentences that contain the substring "you are" in the lines column of the input data A1 table.

For each intermediate key, each reducer task can emit:

• A. One final key-value pair per key; no restrictions on the type.
• B. As many final key-value pairs as desired, as long as all the keys have the same type and all the values have the same type.
• C. One final key-value pair per value associated with the key; no restrictions on the type.
• D. As many final key-value pairs as desired, but they must have the same type as the intermediate key-value pairs.
• E. As many final key-value pairs as desired. There are no restrictions on the types of those key-value pairs (i.e., they can be heterogeneous).