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https://issues.apache.org/jira/browse/CASSANDRA-17402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17502400#comment-17502400
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Andres de la Peña commented on CASSANDRA-17402:
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Great, thanks. Committed to 4.0 as
[a690f339ab0f2b98c69621ca5a0bad10ae9a7919|https://github.com/apache/cassandra/commit/a690f339ab0f2b98c69621ca5a0bad10ae9a7919]
and merged to
[trunk|https://github.com/apache/cassandra/commit/0d8126dd143898588f4efcdc40b8e2bb10597185].
> Unshared heap size excluding data calculation is broken
> -------------------------------------------------------
>
> Key: CASSANDRA-17402
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17402
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Memtable
> Reporter: Jacek Lewandowski
> Assignee: Jacek Lewandowski
> Priority: Normal
> Fix For: 4.1, 4.0.x
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> Unshared heap size excluding data calculation is broken.
> For example, it does not takes into consideration whether the buffers are
> on-heap or off-heap - empty offheap buffer is 64-bytes while empty heap
> buffer is 48-bytes.
> It matters especially when we have offheap buffers-based memtables.
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