Throw IllegalStateException when handshake fails due to version or cluster mismatch #18676
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…uster mismatch We do throw ConnectTransportException which is logged in trace level hiding a potentially important information when an old or wrong node wants to connect. We should throw ISE and log as warn.
s1monw
added
>enhancement
review
:Distributed/Network
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LGTM. I think we should go further and change https://github.com/elastic/elasticsearch/pull/18676/files#diff-029ce303f3503d9f33f0974c76f69918R356 to also throw a hard exception - we already succesfully connected to that node. |
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We do throw ConnectTransportException which is logged in trace level hiding a potentially
important information when an old or wrong node wants to connect. We should throw ISE and
log as warn.