turboFei commented on issue #27943: [SPARK-31179] Fast fail the connection while last connection failed in the last retry IO wait URL: https://github.com/apache/spark/pull/27943#issuecomment-603163006 Agree the fail fast time window length should be a little less than conf.ioRetryWaitTimeMs(). > The only other question I have is connections not going through the retryingblockfetcher, this could potentially fail them much faster, if its a one time fetch is that what we want. I would need to look a bit more at the usages there. I think we can only fast fail the connection if conf.maxIORetries >0. >Also I'm curious could this lead to the scenario that, when you have two tasks and only one client, the connection request from the second task may fail fast every time it tries to connect (because the connection from the first task always fail beforehand)? I think if the service address is still unreachable after maxIORetries retries, it does not matter to fail the another task.
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