Fault tolerance method based on partial active backup of key task, and stream processing platform
A stream processing and task technology, which is used in electrical digital data processing, redundant operation in data error detection, and response error generation. It can solve problems such as high computing resource overhead and low resource utilization, and achieve shorten Average failure recovery time, fast failure recovery, and the effect of improving resource utilization
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[0031] In order to make the technical solutions and advantages in the embodiments of the present application clearer, the exemplary embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present application, and Not an exhaustive list of all embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0032] When a fault occurs in the Flink stream processing platform, the entire application topology needs to be restarted, and the global consistent state of each operator is pulled back, and the source operator replays the corresponding data according to the pulled state. The global fault recovery time is relatively short. long. Active backup is the fault tolerance method with the fastest fault recovery time in r...
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