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Alpha segfault in worker.(*groupi).members #2322
With a combination of alpha and zero process crashes, some alpha instances (in this case, n1, with the lowest node index) will repeatedly segfault after startup, throwing:
I'm not entirely sure on the timing here, because the panic message isn't timestamped, but looking at normal alpha executions, it looks like this happens just a few seconds into startup, after several failures to establish a connection to the local Zero.
This occurred in the same scenario as #2321--See node n1's alpha logs here: https://github.com/dgraph-io/dgraph/files/1892343/20180409T163239.000-0500.zip