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Posted to commits@cassandra.apache.org by "Dmitry Konstantinov (Jira)" <ji...@apache.org> on 2026/04/10 10:54:00 UTC
[jira] [Created] (CASSANDRA-21295) Avoid unit conversion in DatabaseDescriptor.getMaxValueSize() for every deserializing Cell
Dmitry Konstantinov created CASSANDRA-21295:
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Summary: Avoid unit conversion in DatabaseDescriptor.getMaxValueSize() for every deserializing Cell
Key: CASSANDRA-21295
URL: https://issues.apache.org/jira/browse/CASSANDRA-21295
Project: Apache Cassandra
Issue Type: Improvement
Components: Local/Other
Reporter: Dmitry Konstantinov
Assignee: Dmitry Konstantinov
Attachments: image-2026-04-10-11-52-37-302.png
org.apache.cassandra.db.rows.Cell.Serializer#deserialize checks max cell size and retrieve DatabaseDescriptor.getMaxValueSize() every time for it.
DatabaseDescriptor.getMaxValueSize() inside do a conversion from MiB to bytes.
It costs us 0.48% in a basic select perf test.
The value in bytes can be calculated once and re-used.
!image-2026-04-10-11-52-37-302.png|width=800!
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