Details
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Bug
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Status: Resolved
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Normal
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Resolution: Fixed
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None
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Availability - Process Crash
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Critical
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Normal
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Adhoc Test
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All
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None
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Description
Currently, there is an assumption that internode messages whose verb has priority P0 will always fit within a single messaging frame. While this is usually the case, on occasion it is possible that this assumption does not hold. One example is gossip messages during the startup shadow round, where in very large clusters the digest ack can contain all states for every peer. In this scenario, the respondent fails to send the ack which may lead to the shadow round and, ultimately, the startup failing.
We could tweak the shadow round acks to minimise the message size, but a more robust solution would be to permit high priority messages to be sent on the large messages connection when necessary.