Cloudera
CCD-333 · Question #52
All keys used for intermediate output from mappers must do which of the following:
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HBase Data Manipulation (CRUD)
Question
All keys used for intermediate output from mappers must do which of the following:
Options
- AOverrideisSplitable
- BImplement WritableComparable
- CBe a subclass of Filelnput-Format
- DUse a comparator for speedy sorting
- EBe compressed using a splittable compression algorithm.
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Topics
#WritableComparable#mapper output keys#serialization#sorting