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CCD-410 · Question #41
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 files in HDFS.
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Developing with Apache Spark Core
Question
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 files in HDFS.
Options
- AReduce-side join
- BMap-side join
- CIn-memory join
- DNo, MapReduce cannot perform relational operations.
- ENo, but it can be done with either Pig or Hive.
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Topics
#reduce-side join#relational join#MapReduce#large tables