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From "Richard Low (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-7591) Add per consistency level read and write metrics
Date Tue, 22 Jul 2014 21:30:40 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-7591?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Richard Low updated CASSANDRA-7591:
-----------------------------------

    Summary: Add per consistency level read and write metrics  (was: Add read and write metrics
for each consistency level)

> Add per consistency level read and write metrics
> ------------------------------------------------
>
>                 Key: CASSANDRA-7591
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7591
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Richard Low
>
> It would be helpful to have read and write metrics for each consistency level to help
clients track query rates per consistency level. It's quite common to forget to set e.g. a
config param in the client and use the wrong consistency level. Right now the only way to
find out from Cassandra is to use tracing. It would also be helpful to track latencies for
different consistency levels to estimate the cost of e.g. switching from LOCAL_QUORUM to QUORUM
reads.



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