[CASSANDRA-18097] Bug fix for formula for Clock.waitUntil

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Resolved
• Fix Version/s: 4.1.x, 5.x
• Platform: All
• Assignee: Marianne Lyne Manaog
• Reporter: Marianne Lyne Manaog

Authors

Marianne Lyne Manaog

• Created: 06/Dec/22 16:01
• Updated: 07/Mar/23 10:54
• Resolved: 07/Dec/22 09:22

Description

While working on benchmarking Paxos improvements in OSS Cassandra, the results for paxos variant V2 with 100 partitions is much lower than the V1. Results were shown to benedict and he found the incorrect formula for waitNanos in Clock.java.

Also, tests were added to verify behaviour of ContentionStrategy backoff methods
Test behaviour fixed in CASSANDRA-18086 plus another one-line bug fix in Clock.waitUntil().
 

Issue Links

• is caused by: CASSANDRA-17164 CEP-14: Paxos Improvements
• is superceded by: CASSANDRA-18086 Bug fix for 'wait' time to be in nanoseconds for consistency instead of microseconds
• relates to: CASSANDRA-18086 Bug fix for 'wait' time to be in nanoseconds for consistency instead of microseconds