[ELK] 집계 - Aggregations
Metrics, Bucket Aggregations( Range, Histogram, Terms ), sub aggregations, pipeline aggregations
Posted by
Wonyong Jang
on July 20, 2021 ·
18 mins read
[ELK] ElasticSearch에서 Object와 Nested
Object 와 Nested 검색 차이
Posted by
Wonyong Jang
on July 13, 2021 ·
7 mins read
[Kafka] Apache Kafka Consumer Group
컨슈머 그룹을 사용하는 이유와 파티션 수의 관계
Posted by
Wonyong Jang
on July 10, 2021 ·
9 mins read
[Spark] Broadcast, Accumulator 공유변수
braodcast, accumulator, closure
Posted by
Wonyong Jang
on July 08, 2021 ·
4 mins read
[Spark] How to override a spark dependency in cluster mode(AWS EMR)
라이브러리 버전 충돌이 발생할 때 shadowJar를 사용하여 package relocate
Posted by
Wonyong Jang
on July 08, 2021 ·
5 mins read
[Scala] 동시성을 위한 Future
Concurrency / Await.ready 와 Await.result 차이
Posted by
Wonyong Jang
on July 07, 2021 ·
9 mins read
[ELK] ElasticSearch에서 text 타입과 keyword 타입 차이
fielddata, doc_values 에 대한 이해와 주의사항 / keyword 필드 검색시 주의사항 및 normalizer 적용
Posted by
Wonyong Jang
on July 06, 2021 ·
9 mins read
[Spark] Persistence 와 Data Locality
RDD Persistence / memory, disk cache / locality level(PROCESS LOCAL, NODE LOCAL, RACK LOCAL)
Posted by
Wonyong Jang
on June 23, 2021 ·
11 mins read