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https://issues.apache.org/jira/browse/CASSANDRA-20167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17922063#comment-17922063
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Dmitry Konstantinov commented on CASSANDRA-20167:
-------------------------------------------------
Pre-commit CI run results:
||Branch||CI||
|[trunk|https://github.com/netudima/cassandra/tree/20167-trunk]|[j11|https://ci-cassandra.apache.org/view/patches/job/Cassandra-devbranch-5/137/]|
Failed tests:
* Tests / dtest jdk11 8/64 /
dtest.bootstrap_test.TestBootstrap.test_rf_gt_nodes_multidc_should_succeed -
flaky, present in Butler (5.0 and 4.1 branches)
* Tests / dtest jdk11 8/64 /
dtest.cqlsh_tests.test_cqlsh_copy.TestCqlshCopy.test_bulk_round_trip_with_backoff
- flaky, present in Butler
* Tests / dtest jdk11 8/64 /
dtest.topology_test.TestTopology.test_decommissioned_node_cant_rejoin - flaky,
present in Butler
> Reduce memory allocations in miscellaneous places along write path
> ------------------------------------------------------------------
>
> Key: CASSANDRA-20167
> URL: https://issues.apache.org/jira/browse/CASSANDRA-20167
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Consistency/Coordination, Local/Other
> Reporter: Dmitry Konstantinov
> Assignee: Dmitry Konstantinov
> Priority: Normal
> Fix For: 5.0.x
>
> Attachments: 20167_BTreeRow_Builder_reuse-5.0.patch,
> 20167_SingleTableSinglePartitionUpdatesCollector-5.0.patch,
> 20167_bind_vars_immutable_list-5.0.patch, 20167_mutation-5.0.patch,
> 20167_network-5.0.patch, 20167_partition_update_iterator-5.0.patch,
> 20167_restriction_set_as_array-5.0.patch,
> 20167_single_clustering_key-5.0.patch,
> ci_summary_netudima_20167-5.0_147.html, image-2024-12-26-22-01-32-592.png,
> image-2024-12-26-22-01-55-614.png, image-2024-12-26-22-02-44-040.png,
> image-2024-12-26-22-03-49-018.png,
> results_details_netudima_20167-5.0_147.tar.xz
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> Avoid unnecessary allocations in different places along write path:
> * avoid iterator allocations if possible
> * handle typical cases (such as a single row, single table writes) more
> efficiently
> * add fast paths for typical scenarios (like pending ranges is empty)
> * memorize things which can be computed once
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