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https://issues.apache.org/jira/browse/CASSANDRA-21360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18086217#comment-18086217
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Dmitry Konstantinov commented on CASSANDRA-21360:
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CI test results:
https://pre-ci.cassandra.apache.org/job/cassandra/590/
[^CASSANDRA-21360-trunk_ci_summary.htm.zip]
https://pre-ci.cassandra.apache.org/job/cassandra-6.0/46/
[^CASSANDRA-21360-6.0_ci_summary.htm.zip]
Test failures are not related to the change.
> Reduce memory allocations in miscellaneous places along read path
> -----------------------------------------------------------------
>
> Key: CASSANDRA-21360
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21360
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Local/Other
> Reporter: Dmitry Konstantinov
> Assignee: Dmitry Konstantinov
> Priority: Normal
> Fix For: 6.x, 7.x
>
> Attachments: CASSANDRA-21360-6.0_ci_summary.htm.zip,
> CASSANDRA-21360-trunk_ci_summary.htm.zip
>
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> * org.apache.cassandra.db.rows.RangeTombstoneMarker.Merger can be allocated
> on demand - 0.31%
> * Optional usage in
> org.apache.cassandra.db.rows.UnfilteredRowIteratorWithLowerBound - 0.2%
> * Double in
> org.apache.cassandra.io.util.CompressedChunkReader#getCrcCheckChance - 0.17%
> * Stack - adjust default (currently it is 5) to avoid extra resizings in
> org.apache.cassandra.db.transform.Stack#resize - 0.17%
> * EnumSet for CL guardrail in SelectStatement - 0.1%
> * EnumSet in ResultMetadata - 0.11%
> Total: 0.98%
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