[CASSANDRA-17243] Fix BYTES_PER_MEGABIT in StreamManager

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 3.0.26, 3.11.12, 4.0.2, 4.1-alpha1, 4.1
• Component/s: Consistency/Streaming
• Bug Category: Correctness
• Severity: Normal
• Complexity: Low Hanging Fruit
• Discovered By: User Report
• Platform: All
• Since Version: 2.0 beta 1

Source Control Link

https://github.com/apache/cassandra/commit/40bf53359cae0805a978113a9e3156b168b48b14

Test and Documentation Plan

CI runs included

• Assignee: Andres de la Peña
• Reporter: Ekaterina Dimitrova

Authors

Andres de la Peña

Reviewers

Berenguer Blasi

• Created: 07/Jan/22 18:22
• Updated: 27/May/22 19:25
• Resolved: 26/Jan/22 11:57

Description

While working on CASSANDRA-15234 I noticed BYTES_PER_MEGABIT constant in the

StreamManager

class. It was introduced in CASSANDRA-16959.
The current formula converts actually bytes to mebibits.

The change needed for 3.0, 3.11 and 4.0(I am currently changing rate parameters to be in MiB/s for trunk as part of CASSANDRA-15234):

public static final double BYTES_PER_MEGABIT = (1000 * 1000) / 8; // from bits

CC adelapena

Issue Links

• relates to: CASSANDRA-15234 Standardise config and JVM parameters