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https://issues.apache.org/jira/browse/CASSANDRA-9738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15140764#comment-15140764
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Robert Stupp commented on CASSANDRA-9738:
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Yes, it is.
Just want to get the current UDF/UDA stuff done before.
Generally, I'd like to see what's coming with CASSANDRA-9754. The current
"problem" is the amount of off-heap serializations for big partitions as we do
a binary search for the lookup. If that gets better with CASSANDRA-9754, that
would be great.
We can optimize the whole path with CASSANDRA-8931 and CASSANDRA-9786. If these
give promising results, a follow-up _might_ be to merge the summary into
index-info.
> Migrate key-cache to be fully off-heap
> --------------------------------------
>
> Key: CASSANDRA-9738
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9738
> Project: Cassandra
> Issue Type: Sub-task
> Reporter: Robert Stupp
> Assignee: Robert Stupp
> Fix For: 3.x
>
>
> Key cache still uses a concurrent map on-heap. This could go to off-heap and
> feels doable now after CASSANDRA-8099.
> Evaluation should be done in advance based on a POC to prove that pure
> off-heap counter cache buys a performance and/or gc-pressure improvement.
> In theory, elimination of on-heap management of the map should buy us some
> benefit.
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