[jira] [Updated] (CASSANDRA-17225) Add a virtual table for exposing batch metrics

["Ekaterina Dimitrova (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-17225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ekaterina Dimitrova updated CASSANDRA-17225:
--------------------------------------------
    Reviewers: Ekaterina Dimitrova

> Add a virtual table for exposing batch metrics
> ----------------------------------------------
>
>                 Key: CASSANDRA-17225
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-17225
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Feature/Virtual Tables
>            Reporter: Benjamin Lerer
>            Assignee: Michael Burman
>            Priority: Normal
>              Labels: AdventCalendar2021, lhf
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> There are some existing metrics within BatchMetrics that provide metrics about related to the different types of Batches being executed. We should expose those through a virtual table.
> +Additional information for newcomers:+
> A new class should be created for representing the new Virtual Table in {{org.apache.cassandra.db.virtual}}. You can look at {{ThreadPoolsTable}} for an example of virtual table implementation and to {{TableMetricTables}} for how Histogram metrics can be exposed. The new table will need to be registered in {{SystemViewsKeyspace}}.
> Some unit tests should be added. For some example of virtual table tests you can look at {{SystemPropertiesTableTest}}.



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