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https://issues.apache.org/jira/browse/CASSANDRA-7047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13974756#comment-13974756
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Sergio Bossa commented on CASSANDRA-7047:
-----------------------------------------
First two cases have been a miss by my side.
Third case was intentional, as I preferred to keep mutations from different
triggers separated.
If you want to merge them as well, I'm ok.
I'll have a look ASAP.
> TriggerExecutor should group mutations by row key
> -------------------------------------------------
>
> Key: CASSANDRA-7047
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7047
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Sergio Bossa
> Assignee: Sergio Bossa
> Attachments: 7047-v2.txt, 7047-v3.txt, CASSANDRA-7047.patch
>
>
> TriggerExecutor doesn't currently group mutations returned by triggers even
> if belonging to the same row key: while harmful per se (at least, I think
> so), this is definitely a performance problem, because each mutation is a
> *cluster* mutation, generating more network traffic, more disk IO and more
> index calls (if present).
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