[FELIX-5751] Frequent JVM crashes during Bundle.getEntry()

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Component/s: Framework
• Assignee: Karl Pauls
• Reporter: Neil Bartlett
• Created: 24/Nov/17 11:06
• Updated: 24/Nov/17 19:42
• Resolved: 24/Nov/17 12:50

Description

Unclear whether there is anything Felix can do to fix or workaround this, but raising for info anyway...

I am developing an application with Felix 5.7.0-SNAPSHOT (pulled from the Apache Snapshots repo, JAR built on Tue Nov 07 23:42:44 CET 2017).

The nature of the application means that frequent calls are made to Bundle.getEntry(). Also because I am developing incrementally in Bndtools, the bundle is being updated frequently. Apparently as a result, I am getting JVM crashes every 5-10 minutes. The crash always happens in Bundle.getEntry(), specifically in the native getEntry(long,byte[],boolean) method of java.util.zip.ZipFile.

It seems likely this is happening due to Bundle.getEntry being invoked concurrently with Bundle.update, so I wonder if Felix can implement any locking in this scenario? I have attached several hs_err files generated by the JVM.

I am running Java 1.8.0_152-b16 on macOS Sierra (10.12.6 (16G29)). I have not yet replicated the crash with released Framework 5.6.10 but I am attempting to do so and will update this issue.