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From "Jordan West (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-14782) Make DatabaseDescriptor.getNativeTransportMaxFrameSize() a hotprop
Date Mon, 24 Sep 2018 21:47:00 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-14782?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jordan West updated CASSANDRA-14782:
------------------------------------
    Summary: Make DatabaseDescriptor.getNativeTransportMaxFrameSize() a hotprop  (was: Large
mutations can wreak havoc before being rejected by the commit log)

> Make DatabaseDescriptor.getNativeTransportMaxFrameSize() a hotprop
> ------------------------------------------------------------------
>
>                 Key: CASSANDRA-14782
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14782
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jordan West
>            Priority: Major
>
> Large mutations are rejected by the commit log (https://github.com/apache/cassandra/blob/cassandra-3.0/src/java/org/apache/cassandra/db/commitlog/CommitLog.java#L254)
but when {{totalSize}} is significantly greater than the {{MAX_MUTATION_SIZE}} the damage
to the node may already done. Large mutations cause large buffers to be allocated and can
lead to GC trashing and generally bad node health. 
> It should be possible to set a size above which the native protocol rejects messages
without materializing them into objects and passing them downstream. 
>  



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