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a6ef73f4f2
Successfully completing processing with an errgroup cancels the associated context. However, we also have a goroutine that is checking for cancelation of the context. As a result, there is a race where the goroutine can pick up the cancelation and report an error, replacing the sucessful error message. To avoid that, this replaces the goroutine with a cancelation check when we are reading files. This also has the advantage of stopping all reads relatively quickly on error and also ensuring that there are no outstanding I/O operations when we return in this case. The downside is that if a file read blocks forever (for example, over the network) then cancelation of the context effectively won't be honored. However, this is also true for other smaller files we read and the tensors are read in small chunks (128K), so it's consistent and better on balance overall. |
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| backend | ||
| nn | ||
| backend.go | ||