dependency & DF & DataSet & patitioner
摘要:
dependecy narrow :onetoone prune range wide :shuffle 查看依赖: .dependecies .toDebugString DF catalyst:(sql's query optimizer) reordering operations reduc 阅读全文
posted @ 2017-10-06 22:42 satyrs 阅读(635) 评论(0) 推荐(0) 编辑