Explanation:The output of the reduce task is typically written to the FileSystem. The output of the Reducer is not sorted. 7. Which of the following phases occur simultaneously ?
A. Shuffle and Sort
B. Reduce and Sort
C. Shuffle and Map
D. All of the mentioned
Answer:A
Explanation:The output of the reduce task is typically written to the FileSystem. The output of the Reducer is not sorted. 7. Which of the following phases occur simultaneously ?
A. Shuffle and Sort B. Reduce and Sort C. Shuffle and Map D. All of the mentioned
Explanation:The shuffle and sort phases occur simultaneously; while map-outputs are being fetched they are merged. 8. Mapper and Reducer implementations can use the ________ to report progress or just indicate that they are alive.