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From "Kurt Greaves (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-12649) Add BATCH metrics
Date Mon, 31 Oct 2016 23:03:58 GMT


Kurt Greaves commented on CASSANDRA-12649:

So rebased the patch on 3.X and one of the added unit tests actually exposed a bug that was
just introduced in CASSANDRA-12060. Attached new, rebased patch here, however doubtful it's
going to make it into 3.10.

Also raised CASSANDRA-12867 to cover the bug.

> Add BATCH metrics
> -----------------
>                 Key: CASSANDRA-12649
>                 URL:
>             Project: Cassandra
>          Issue Type: Wish
>            Reporter: Alwyn Davis
>            Priority: Minor
>             Fix For: 3.x
>         Attachments: trunk-12649.txt
> To identify causes of load on a cluster, it would be useful to have some additional metrics:
> * *Mutation size distribution:* I believe this would be relevant when tracking the performance
of unlogged batches.
> * *Logged / Unlogged Partitions per batch distribution:* This would also give a count
of batch types processed. Multiple distinct tables in batch would just be considered as separate

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