DataFrames support structured data, and Datasets support semistructured

data.

True

b) The validation or hold-out set is used to optimize the model

complexity.

c) Spark Discretized Stream (DStream) is built on RDDs, and Spark Structured

Streaming utilizes Spark Dataframes.

d) MLlib for RDD and ML for DataFrames.

e) Google file system (GFS) or Hadoop distributed file system (HDFS) has

advantages of fast random access and support petabyte storage.

f) Both Hive and Pig compile/translate high-level programs/scripts (where

Hive translates HQL and Pig translates PigLatin) and generate MapReduce

jobs that run on the Hadoop cluster.

g) Hadoop nodes are mostly cpu-bound.

h) Mahout is a machine learning library on top of Hadoop.

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