spark技术分享

2013-03-21admin阅读(893)赞(0)

EliminateSerialization Logical Optimization

2013-03-20admin阅读(1718)赞(0)

DecimalAggregates Logical Optimization DecimalAggregates is a base logical optimization that transforms Sum and Av ...

2013-03-19admin阅读(1520)赞(0)

CostBasedJoinReorder Logical Optimization — Join Reordering in Cost-Based Optimization

2013-03-18admin阅读(1079)赞(0)

ConstantFolding Logical Optimization ConstantFolding is a base logical optimization that replaces expressions that ...

2013-03-17admin阅读(1613)赞(0)

ComputeCurrentTime Logical Optimization ComputeCurrentTime is a base logical optimization that computes the curren ...

2013-03-16admin阅读(1706)赞(0)

CombineUnions Logical Optimization CombineUnions is a base logical optimization that FIXME. CombineUnions is par ...

2013-03-15admin阅读(2395)赞(0)

CombineTypedFilters Logical Optimization

2013-03-14admin阅读(1697)赞(0)

ColumnPruning Logical Optimization ColumnPruning is a base logical optimization that FIXME. ColumnPruning is par ...

2013-03-13admin阅读(1727)赞(0)

CollapseWindow Logical Optimization CollapseWindow is a base logical optimization that FIXME. CollapseWindow is ...

2013-03-12admin阅读(1715)赞(0)

WindowsSubstitution Logical Evaluation Rule