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https://issues.apache.org/jira/browse/CASSANDRA-16581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17344800#comment-17344800
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David Capwell commented on CASSANDRA-16581:
-------------------------------------------
What I see is org.apache.cassandra.transport.InitialConnectionHandler#decode
gets "firstByte" to be 66, and applying the PROTOCOL_VERSION_MASK doesn't
change the value.
When I run
{code}
./bin/cqlsh --protocol-version 4
{code}
the first byte is 4 and versionNum is also 4 (the same is true with
--protocol-version 3, but first byte is 3)
This looks like cqlsh is missing this?
> Failure to execute queries should emit a KPI other than read
> timeout/unavailable so it can be alerted/tracked
> -------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-16581
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16581
> Project: Cassandra
> Issue Type: Bug
> Components: Messaging/Client, Observability/Metrics
> Reporter: David Capwell
> Assignee: David Capwell
> Priority: Normal
> Fix For: 3.0.x, 3.11.x, 4.0-rc
>
>
> When we are unable to parse a message we do not have a way to detect this
> from a monitoring point of view so can get into situations where we believe
> the database is fine but the clients are on-fire. This case popped up in the
> 2.1 to 3.0 upgrade as paging state wasn’t mixed-mode safe.
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