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Title: Big Data Analyst
Description: Big Data Analyst Roles and Responsibilities. At its core, Big Data analytics centers on uncovering and analyzing useful data like hidden trends and patterns so companies can make more informed business decisions and gain a competitive advantage.
Description: Big Data Analyst Roles and Responsibilities. At its core, Big Data analytics centers on uncovering and analyzing useful data like hidden trends and patterns so companies can make more informed business decisions and gain a competitive advantage.
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“Java Interface”
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In order to read any file in HDFS, instance of __________ is required
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2
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a) The framework groups Reducer inputs by keys
b) The shuffle and sort phases occur simultaneously i
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while outputs are being fetched
they are merged
c) Since JobConf
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3
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a) IOUtils
b) Utils
c) IUtils
d) All of the mentioned
Answer: a
Explanation: IOUtils class is static method in Java interface
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_____________ is used to read data from bytes buffers
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5
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a) The framework calls reduce method for each
inputs
b) The output of the Reducer is re-sorted
c) reduce method reduces values for a given key
d) None of the mentioned
Answer: b
Explanation: The output of the Reducer is not re-sorted
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Interface ____________ reduces a set of intermediate values which share a key to a
smaller set of values
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Reducer is input the grouped output of a ____________
a) Mapper
b) Reducer
c) Writable
d) Readable
Answer: a
Explanation: In the phase the framework, for each Reducer, fetches the relevant partition
of the output of all the Mappers, via HTTP
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The output of the reduce task is typically written to the FileSystem via ____________
a) OutputCollector
b) InputCollector
c) OutputCollect
d) All of the mentioned
Answer: a
Explanation: In reduce phase the reduce(Object, Iterator, OutputCollector, Reporter)
method is called for each pair in the grouped inputs
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Applications can use the _________ provided to report progress or just indicate that they
are alive
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10
Title: Big Data Analyst
Description: Big Data Analyst Roles and Responsibilities. At its core, Big Data analytics centers on uncovering and analyzing useful data like hidden trends and patterns so companies can make more informed business decisions and gain a competitive advantage.
Description: Big Data Analyst Roles and Responsibilities. At its core, Big Data analytics centers on uncovering and analyzing useful data like hidden trends and patterns so companies can make more informed business decisions and gain a competitive advantage.