정리

[impala cache]
https://docs.cloudera.com/documentation/enterprise/6/6.3/topics/impala_perf_hdfs_caching.html

https://docs.cloudera.com/documentation/enterprise/6/properties/6.3/topics/cm_props_cdh630_impala.html
max_result_cache_size 100000

[small files]
https://blog.cloudera.com/the-small-files-problem/

[리밸런싱]
mapreduce locality
block 수 = 작은 파일 많음 = 작은 파일 처리 최적화x
리밸런스하면 해결될수도

[Mapreduce]

https://blog.acronym.co.kr/312

https://m.blog.naver.com/PostView.naver?isHttpsRedirect=true&blogId=alice_k106&logNo=220462251435

https://alnova2.tistory.com/1038

https://velog.io/@leeyj27/%EB%A7%B5%EB%A6%AC%EB%93%80%EC%8A%A4-%EC%9E%91%EB%8F%99-%EA%B3%BC%EC%A0%95-%EC%A0%95%EB%A6%AC