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購買後，立即下載 Apache-Hadoop-Developer 題庫 (Hadoop 2.0 Certification exam for Pig and Hive Developer): 成功付款後, 我們的體統將自動通過電子郵箱將您已購買的產品發送到您的郵箱。（如果在12小時內未收到，請聯繫我們，注意：不要忘記檢查您的垃圾郵件。）

最新的 HCAHD Apache-Hadoop-Developer 免費考試真題:

1. Indentify which best defines a SequenceFile?

A) A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be the same type. Each value must be the same type.
B) A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous Writable objects
C) A SequenceFile contains a binary encoding of an arbitrary number of WritableComparable objects, in sorted order.
D) A SequenceFile contains a binary encoding of an arbitrary number of homogeneous Writable objects

2. Given the following Pig command:
logevents = LOAD 'input/my.log' AS (date:chararray, levehstring, code:int, message:string);
Which one of the following statements is true?

A) The statement is not a valid Pig command
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 logevents relation represents the data from the my.log file, using a tab as the parsing delimiter

3. In a MapReduce job with 500 map tasks, how many map task attempts will there be?

A) At least 500.
B) Exactly 500.
C) At most 500.
D) It depends on the number of reduces in the job.
E) Between 500 and 1000.

4. You have user profile records in your OLPT database, that you want to join with web logs you have already ingested into the Hadoop file system. How will you obtain these user records?

A) Ingest with Flume agents
B) HDFS command
C) Pig LOAD command
D) Ingest with Hadoop Streaming
E) Hive LOAD DATA command
F) Sqoop import

5. Which of the following tool was designed to import data from a relational database into HDFS?

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

問題與答案：