71. Spark includes a collection over . . . . . . . . operators for transforming data and familiar data frame APIs for manipulating semi-structured data.
72. Point out the correct statement.
73. Hama is a general . . . . . . . . computing engine on top of Hadoop.
74. . . . . . . . . method is used to include a projection schema, to specify the output fields.
75. Drill provides a . . . . . . . . like internal data model to represent and process data.
76. The Avros class also has a . . . . . . . . method for creating PTypes for POJOs using Avro's reflection-based serialization mechanism.
77. A key of type . . . . . . . . is generated which is used later to join ngrams with their heads and tails in the reducer phase.
78. During merging, . . . . . . . . now always checks the incoming segments for corruption before merging.
79. . . . . . . . . is a distributed graph processing framework on top of Spark.
80. Apache . . . . . . . . provides direct queries on self-describing and semi-structured data in files.
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