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From "Aleksey Yeschenko (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-6487) Log WARN on large batch sizes
Date Fri, 11 Apr 2014 23:22:20 GMT


Aleksey Yeschenko commented on CASSANDRA-6487:

No, that's not what I meant. I meant the size of the resulting Mutation-s (RowMutation-s pre
2.1), as a sum of ColumnFamily#dataSize()-s for each of the Mutation#getColumnFamilies().
Of course it would affect the path - any extra stuff you do would.

> Log WARN on large batch sizes
> -----------------------------
>                 Key: CASSANDRA-6487
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Patrick McFadin
>            Assignee: Lyuben Todorov
>            Priority: Minor
>             Fix For: 2.0.8
>         Attachments: 6487_trunk.patch, 6487_trunk_v2.patch, cassandra-2.0-6487.diff
> Large batches on a coordinator can cause a lot of node stress. I propose adding a WARN
log entry if batch sizes go beyond a configurable size. This will give more visibility to
operators on something that can happen on the developer side. 
> New yaml setting with 5k default.
> {{# Log WARN on any batch size exceeding this value. 5k by default.}}
> {{# Caution should be taken on increasing the size of this threshold as it can lead to
node instability.}}
> {{batch_size_warn_threshold: 5k}}

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