Can you use MapReduce to perform a relational join on two large tables sharing a key? Assume that the two tables are formatted as comma-separated file in HDFS.

Question

Options

• AYes.
• BYes, but only if one of the tables fits into memory.
• CYes, so long as both tables fit into memory.
• DNo, MapReduce cannot perform relational operations.
• ENo, but it can be done with either Pig or Hive.

• A
  2% (1)
• B
  5% (2)
• C
  80% (35)
• D
  11% (5)
• E
  2% (1)

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