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T Jake Luciani commented on CASSANDRA-8639:
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I'm thinking this is more of an improvement than a bug. Would you be ok with
me only putting this in 3.1?
> Can OOM on CL replay with dense mutations
> -----------------------------------------
>
> Key: CASSANDRA-8639
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8639
> Project: Cassandra
> Issue Type: Improvement
> Components: Local Write-Read Paths
> Reporter: T Jake Luciani
> Assignee: Ariel Weisberg
> Priority: Minor
> Fix For: 2.1.x
>
>
> If you write dense mutations with many clustering keys, the replay of the CL
> can quickly overwhelm a node on startup. This looks to be caused by the fact
> we only ensure there are 1000 mutations in flight at a time. but those
> mutations could have thousands of cells in them.
> A better approach would be to limit the CL replay to the amount of memory in
> flight using cell.unsharedHeapSize()
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