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1. 发明申请

US20080307258A1 Distributed Job Manager Recovery 有权
标题翻译：分布式作业管理器恢复
公开(公告)号：US20080307258A1
公开(公告)日：2008-12-11
申请号：US11761152
申请日：2007-06-11
申请人： James R. Challenger , Louis R. Challenger , James R. Giles , Gabriela Jacques De Silva
发明人： James R. Challenger , Louis R. Challenger , James R. Giles , Gabriela Jacques De Silva
IPC分类号： G06F11/08
CPC分类号： G06F11/1438 , G06F11/1482
摘要： A method is provided for the recovery of an instance of a job manager running on one of a plurality of nodes used to execute the processing elements associated with jobs that are executed within a cooperative data stream processing system. The states of the processing elements are checkpointed to a persistence mechanism in communication with the job manager. From the checkpointed processing element states, the state of each distributed job is determined and checkpointed. Processing element states are also checkpointed locally to the nodes one which the processing elements are running. Following a failure of the job manager, the job manager is reinstantiated on one of the nodes. The recovery instance of the job manger obtains state data for processing elements and jobs from the persistence mechanism and constructs an initial state for jobs and processing elements. These initial states are reconciled against the current states of the processing elements and adjustments are made accordingly. Once the job and processing element states are reconciled, the system is returned to normal operation.
摘要翻译：提供了一种用于恢复在用于执行与在协作数据流处理系统内执行的作业相关联的处理元件的多个节点之一上运行的作业管理器的实例的方法。处理元件的状态被检查到与作业管理器通信的持续机制。从检查点处理元件状态，确定每个分布式作业的状态并检查点。处理元件状态也在本地对处理元件正在运行的节点进行检查点。在作业管理器发生故障之后，任务管理器在其中一个节点上重新启动。作业管理器的恢复实例从持久机制获取处理元素和作业的状态数据，并为作业和处理元素构建初始状态。这些初始状态与处理元件的当前状态相协调，并进行调整。一旦作业和处理元件状态协调一致，系统将恢复正常运行。

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