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From "Philip Thompson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10323) Add more MaterializedView metrics
Date Thu, 24 Sep 2015 18:07:04 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14906749#comment-14906749
] 

Philip Thompson commented on CASSANDRA-10323:
---------------------------------------------

[~rcoli] raised the good point that a very helpful metric for operators would be to track
MV lag, because mutations are applied to the view from the base table asynchronously.

> 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
>
>
> 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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