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https://issues.apache.org/jira/browse/CASSANDRA-9754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15553444#comment-15553444
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Michael Kjellman commented on CASSANDRA-9754:
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I just pushed up a squashed commit for the roughly 68 individual commits I've
made while working on stability and performance over the past few weeks.
https://github.com/mkjellman/cassandra/commit/41c6d43d0b020149a5564d4f7ab3c92e1bfcba64
I'm currently writing up the findings from the latest stress test I've been
running for the last 24 hours across 3 performance clusters and will update the
ticket with that in a bit.
> Make index info heap friendly for large CQL partitions
> ------------------------------------------------------
>
> Key: CASSANDRA-9754
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9754
> Project: Cassandra
> Issue Type: Improvement
> Reporter: sankalp kohli
> Assignee: Michael Kjellman
> Priority: Minor
> Fix For: 4.x
>
> Attachments: 9754_part1-v1.diff, 9754_part2-v1.diff
>
>
> Looking at a heap dump of 2.0 cluster, I found that majority of the objects
> are IndexInfo and its ByteBuffers. This is specially bad in endpoints with
> large CQL partitions. If a CQL partition is say 6,4GB, it will have 100K
> IndexInfo objects and 200K ByteBuffers. This will create a lot of churn for
> GC. Can this be improved by not creating so many objects?
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