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https://issues.apache.org/jira/browse/CASSANDRA-17402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17502244#comment-17502244
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Andres de la Peña commented on CASSANDRA-17402:
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The PR for trunk looks good to me. It seems that the CI runs are hitting the
problems with testing introduced by CASSANDRA-15234. Here are CI runs pointed
to the patched version of CCM that fixes those problems:
||PR||CI||
|[4.0|https://github.com/apache/cassandra/pull/1470]|[j8|https://app.circleci.com/pipelines/github/adelapena/cassandra/1337/workflows/7981ee8d-4333-48cc-84f2-24d2bcd1bbac]
[j11|https://app.circleci.com/pipelines/github/adelapena/cassandra/1337/workflows/3fe9d278-b542-41a2-b3b3-f6c77b859504]|
|[trunk|https://github.com/apache/cassandra/pull/1479]|[j8|https://app.circleci.com/pipelines/github/adelapena/cassandra/1338/workflows/56624bc7-f88c-4d1f-90d0-3f11b32cc02c]
[j11|https://app.circleci.com/pipelines/github/adelapena/cassandra/1338/workflows/3cfbfd82-6328-4a57-9821-783e872919d0]|
The CI runs above also include some repeated runs of {{{}ObjectSizesTest{}}}.
> 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
> 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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