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From "Chris Lohfink (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10323) Add more MaterializedView metrics
Date Sat, 26 Sep 2015 01:01:04 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908951#comment-14908951
] 

Chris Lohfink commented on CASSANDRA-10323:
-------------------------------------------

It's measure of how many mutations are outstanding to replicas of the MVs partitions after/during
the base replicas mutation

> Add more MaterializedView metrics
> ---------------------------------
>
>                 Key: CASSANDRA-10323
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10323
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: T Jake Luciani
>              Labels: lhf
>             Fix For: 3.0.0 rc2
>
>         Attachments: trunk-10323.txt
>
>
> We need to add more metrics to help understand where time is spent in materialized view
writes. We currently track the ratio of async base -> view mutations that fail.
> We should also add
>   * The amount of time spent waiting for the partition lock (contention)
>   * The amount of time spent reading data 
> Any others? 
> [~carlyeks] [~jkni] 



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