[CASSANDRA-15931] USING_G1 is incorrectly set in cassandra-env.sh if G1 is explicitly disabled

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.0-beta1, 4.0
• Component/s: Local/Startup and Shutdown
• Bug Category: Correctness - API / Semantic Implementation
• Severity: Normal
• Complexity: Low Hanging Fruit
• Discovered By: Adhoc Test
• Platform: All
• Since Version: 4.0-alpha3

Source Control Link

https://github.com/apache/cassandra/commit/688bb664c5f4733fafc5a7f27362a56c6e157fda

Test and Documentation Plan

deploy cluster in same environment which first hit the issue

• Assignee: Jeremy Hanna
• Reporter: Jeremy Hanna

Authors

Jeremy Hanna

Reviewers

Brandon Williams, David Capwell

• Created: 08/Jul/20 02:43
• Updated: 16/Mar/22 13:56
• Resolved: 08/Jul/20 16:24

Description

echo $JVM_OPTS | grep -q UseG1GC
USING_G1=$?

This code will set USING_G1 to 0 if G1 is explicitly enabled (+UseG1GC) or explicitly disabled (-UseG1GC), as found on CASSANDRA-15839.