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OutOfMemoryError : Requested array size exceeds VM limit

난누구여긴어디|2018년 8월 31일

java.lang.OutOfMemoryError:Requested array size exceeds VM limitJava has got a limit on the maximum array size your program can allocate. The exact limit is platform-specific but is generally somewhere between 1 and 2.1 billion elements.When you face the java.lang.OutOfMemoryError: Requested array size exceeds VM limit, this means that the application that crashes with the error is trying to all

Hortonworks Data Platform 3.0

난누구여긴어디|2018년 8월 23일

Hybrid Architecture

influxdb vs mysql

난누구여긴어디|2018년 7월 12일

influxDB는 mysql과 같지만, 좀 다르다.- database 그대로 사용- measurement : mysql의 테이블과 같은 개념- tag : indexed column- field : not indexed column

Grafana로 라즈베리파이 모니터링하기

난누구여긴어디|2018년 7월 11일

... Preparing to unpack .../telegraf_1.7.1-1_armhf.deb ...Unpacking telegraf (1.7.1-1) ...telegraf (1.7.1-1) 설정하는 중입니다 ...Created symlink /etc/systemd/system/multi-user.target.wants/telegraf.service → /lib/systemd/system/telegraf.service.

IoT with InfluxDB, Telegraph and Grafana on the Raspberry Pi

난누구여긴어디|2018년 7월 11일

파이 버전이 3는 아니지만 일단 시도. IoT with InfluxDB, Telegraph and Grafana on the Raspberry Pi 3In the internet I stumbled on the following beautiful Grafana Dashboard and wanted to try it out myself, of course.So I will describe here like meInfluxDB, as a databaseTelegraph as a collectorGrafana as visualizationhave installed.1. Install InfluxDBThe data is all collected in the InfluxDB. The current version