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  • Instead of restarting a connected region[FLIP1: Fine Grained Recovery from Task Failures], approximate task-local recovery restarts only the failed task(s). In the setup of a streaming job (tasks connected with pipelined result partition type), a connected region is equal to the entire job in most cases.
  • RestartPipelinedRegionFailoverStrategy is exactly-once, while approximate task-local recovery expects data loss and a bit of data duplication when sources fail.

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