shuffle
2019-10-28 18:43:14 0 举报Shuffle and Sort
作者其他创作
大纲/内容
Other maps
fetch
partitions
merge
Sortphase
map task
reduce task
Reducephase
mergeon disk
map
inputsplit
partition、sort[combiner]spill to disk
Copyphase
Other reduces
buffer inmemory
mixture of in-memory and on-disk data
output
reduce
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