5
MapReduce
Wordcount로 보는 MapReduce의 이해
전체 데이터의 단어별 개수를 세는 작업
Hello Apache Flink
Apache Flink is good
I like Apache Flink
Hello, 1
Apache, 1
Flink, 1
Apache, 1
Flink, 1
is, 1
good, 1
I, 1
like, 1
Apache, 1
Flink, 1
Apache, 1
Apache, 1
Apache, 1
Flink, 1
Flink, 1
Flink, 1
Hello, 1
I, 1
like, 1
is, 1
good, 1
Hello Apache Flink
Apache Flink is good
I like Apache Flink
Apache, 3
Flink, 3
Hello, 1
I, 1
like, 1
is, 1
good, 1
Apache, 3
Flink, 3
Hello, 1
I, 1
like, 1
is, 1
good,1
Input Split Map Sort & Shuffle Reduce Output