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

["Neil Bartlett (JIRA)" <ji...@apache.org>]

Neil Bartlett created FELIX-5751:
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             Summary: Frequent JVM crashes during Bundle.getEntry()
                 Key: FELIX-5751
                 URL: https://issues.apache.org/jira/browse/FELIX-5751
             Project: Felix
          Issue Type: Bug
          Components: Framework
            Reporter: Neil Bartlett
         Attachments: hs_err_pid157.log, hs_err_pid1904.log, hs_err_pid3760.log, hs_err_pid87229.log, hs_err_pid88316.log

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.



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