[jira] [Commented] (CASSANDRA-7384) Collect metrics on queries by consistency level

["Sylvain Lebresne (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-7384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15147220#comment-15147220 ] 

Sylvain Lebresne commented on CASSANDRA-7384:
---------------------------------------------

bq.  It's pretty common that a customer uses an incorrect consistency level for their environment.

I'll mention that this problem _might_ be better handled by CASSANDRA-8303.

Anyway, if we do expose counters for that (on which I'm neutral: I agree we can't expose everything but I understand that it could be convenient in some environment), we should also expose how often queries failed to achieve said consistency as suggested in CASSANDRA-9191 (I guess both might not be useful in the exact scenario but it feels silly not to just deal with them in the same patch).

> Collect metrics on queries by consistency level
> -----------------------------------------------
>
>                 Key: CASSANDRA-7384
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7384
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Vishy Kasar
>            Assignee: sankalp kohli
>            Priority: Minor
>             Fix For: 3.x
>
>
> We had cases where cassandra client users thought that they were doing queries at one consistency level but turned out to be not correct. It will be good to collect metrics on number of queries done at various consistency level on the server. See the equivalent JIRA on java driver: https://datastax-oss.atlassian.net/browse/JAVA-354



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