开发者边车，github打不开，github 加速, git clone加速，google CDN加速，Stack Overflow加速
dcluster是一款定位为开发从数据集成到数据开发治理再到数据智能分析的一站式指标中台产品。通过集成优秀的开源项目dolphinscheduler、supersonic、dinky等实现任务调度、实时开发、智能分析等核心功能。
spark使用JavaAPI操作Elasticsearch 本次使用spark版本 2.2.0,elasticsearch 版本6.4.0
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