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https://issues.apache.org/jira/browse/CASSANDRA-6843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13931931#comment-13931931
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Benedict commented on CASSANDRA-6843:
-------------------------------------
Patch available [here|https://github.com/belliottsmith/cassandra/tree/iss-6843]
This patch introduces GC (early reclaim) to the NativePool and NativeAllocator
implementations introduced in CASSANDRA-6842, which this patch also depends on.
The patch is reasonably simple as the memory management is already largely
setup. The main change/addition is a new NativeCleaner and some life cycle
management to PoolAllocator.
> Reclaim overwritten off-heap memtable space early
> -------------------------------------------------
>
> Key: CASSANDRA-6843
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6843
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Benedict
> Assignee: Benedict
> Labels: performance
> Fix For: 3.0
>
>
> Perform GC on the off-heap memtable arenas
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