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dfc7cc7a62
Extend the timeout from 1s to defaultRequestTimeout 5s. The 1s may bring unwanted burden to the target member. If the member is busy at recovering, it has limited bandwidth for client requests. A short timeout at client side will retry quickly while keeping the on-going connections. Thus, etcd will queue lots of requests and connections and takes long time to clear them. This finally causes the timeout of member health check. This problem is a general one that how etcd handles amounts of requests at the same time in a good way. We don't plan to address it at current stage.