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- W2562515696 abstract "We have been developing a light-weight workflow system called Pwrake to execute data-intensive many-task workflows with the help of high-performance parallel I/O of Gfarm file system. This paper discusses the design of fault tolerance mechanism implemented in Pwrake. To avoid a workflow abort in the occurrence of a worker node failure, Pwrake detects a node failure based on the result of a task retry. To avoid loss of files when a worker node fails, we make use of automatic file replication of Gfarm file system. To resume an interrupted workflow correctly, we introduce a Pwrake option to rename or remove an output file of a failed task. In the experiment, we confirmed that the overhead of Gfarm automatic file replication in workflow execution time is less than 10%, and that workflow continues and returns right results even after the occurrence of an artificial failure in a worker node." @default.
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- W2562515696 date "2016-11-13" @default.
- W2562515696 modified "2023-09-23" @default.
- W2562515696 title "Design of fault tolerant pwrake workflow system supported by gfarm file system" @default.
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- W2562515696 doi "https://doi.org/10.5555/3019078.3019080" @default.
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