[KAFKA-5470] Replace -XX:+DisableExplicitGC with -XX:+ExplicitGCInvokesConcurrent in kafka-run-class

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Assignee: Ismael Juma
• Reporter: Ismael Juma
• Created: 19/Jun/17 15:16
• Updated: 01/Nov/17 20:08
• Resolved: 09/Aug/17 22:45

Description

This is important because Bits.reserveMemory calls System.gc() hoping to free native memory in order to avoid throwing an OutOfMemoryException. This call is currently a no-op due to -XX:+DisableExplicitGC.

It's worth mentioning that -XX:MaxDirectMemorySize can be used to increase the amount of native memory available for allocation of direct byte buffers.

Hongyuan Li pointed out the issue with the usage of -XX:+DisableExplicitGC in: https://issues.apache.org/jira/browse/KAFKA-5444?focusedCommentId=16054129&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16054129

Issue Links

• links to: GitHub Pull Request #3371