Explanation:Goal of Crunch is to make pipelines that are composed of many user-defined functions simple to write, easy to test, and efficient to run. 2. Point out the correct statement :
A. Scrunch’s Java API is centered around three interfaces that represent distributed datasets
B. All of the other data transformation operations supported by the Crunch APIs are implemented in terms of three primitives
C. A number of common Aggregator implementations are provided in the Aggregators class
D. All of the mentioned
Answer:A
Explanation:Goal of Crunch is to make pipelines that are composed of many user-defined functions simple to write, easy to test, and efficient to run. 2. Point out the correct statement :
A. Scrunch’s Java API is centered around three interfaces that represent distributed datasets B. All of the other data transformation operations supported by the Crunch APIs are implemented in terms of three primitives C. A number of common Aggregator implementations are provided in the Aggregators class D. All of the mentioned
Explanation:PGroupedTable provides a combineValues operation that allows a commutative and associative Aggregator to be applied to the values of the PGroupedTable instance on both the map and reduce sides of the shuffle. 3. For Scala users, there is the __________ API, which is built on top of the Java APIs