Safe synchronization of parallel data operator trees

摘要: An operator tree is formed for a data processing plan, the containing plurality of interconnected nodes and including grouping two or more duplicative portions, each portions having identical structure such that when executed, operators executed in first portion using thread perform same functions use different than second thread. One one to be synchronized with other are identified. A synchronization point created identified subsequent threads, wherein receives information from build an artifact deliver depend on artifact.