From: antirez <antirez@gmail.com>
Date: Wed, 14 Nov 2012 10:30:24 +0000 (+0100)
Subject: MIGRATE: retry one time on I/O error.
X-Git-Url: https://git.saurik.com/redis.git/commitdiff_plain/2feef47aa1642df8637522c3d0b8efa16ec4bbc0?hp=2feef47aa1642df8637522c3d0b8efa16ec4bbc0

MIGRATE: retry one time on I/O error.

Now that we cache connections, a retry attempt makes sure that the
operation don't fail just because there is an existing connection error
on the socket, like the other end closing the connection.

Unfortunately this condition is not detectable using
getsockopt(SO_ERROR), so the only option left is to retry.

We don't retry on timeouts.
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