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Michael Kjellman commented on CASSANDRA-9754: --------------------------------------------- There were some issues with my cherry-pick to my public GitHub branch. I started from scratch and squashed all 182 individual commits from scratch, rebased up to 2.1.16, and pushed to a new branch: https://github.com/mkjellman/cassandra/tree/CASSANDRA-9754-2.1-v2 The full squashed 2.1 based patch is https://github.com/mkjellman/cassandra/commit/b17f2c1317326fac7b6864a2fc61d7ee2580f740 > 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? -- This message was sent by Atlassian JIRA (v6.3.4#6332)