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From "viasyn (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KARAF-3787) Classes are not updated after bundle redeploy
Date Mon, 15 Jun 2015 13:43:00 GMT

    [ https://issues.apache.org/jira/browse/KARAF-3787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14585932#comment-14585932
] 

viasyn commented on KARAF-3787:
-------------------------------

I'm awfully sorry, looks like it was my fault - I did not stop one of threads due to small
typo, so this thread prevents classes from reload. 

Could anybody give me advice how to avoid/debug such class leaks? There was no interesting
information in karaf log (even with Debug loglevel).

As far as I understood, classloader instance is based on bundle name? So, maybe it's good
idea to check that some classes in classloader can't be reloaded and warns user somehow?


> Classes are not updated after bundle redeploy
> ---------------------------------------------
>
>                 Key: KARAF-3787
>                 URL: https://issues.apache.org/jira/browse/KARAF-3787
>             Project: Karaf
>          Issue Type: Bug
>    Affects Versions: 4.0.0.M3
>            Reporter: viasyn
>         Attachments: karaf_class_unloading.png
>
>
> I have a simple bundle.
> I installed and started it and it works.
> When I rebuild it with some changes, then reinstall it:
> {code}
> uninstall com.demo.*
> install http://localhost:8081/nexus/content/repositories/obr-local/com/demo/discovery-dns_2.11/1.0-SNAPSHOT/discovery-dns_2.11-1.0-SNAPSHOT.jar
> {code}
> It reinstalls successfully, but when I'm checking for new behaviour I found the old one.
> Looks like classes was not reloaded.
> This problem is really bothers me, because I'm trying to implement logic dynamically
reconfiguring server roles.
> Here is my bundle's manifest. Note that I modifying class in private-package (but for
export-package problem remains)
> {code}
> Manifest-Version: 1.0
> Bnd-LastModified: 1434359055159
> Bundle-Activator: com.demo.cluster.discovery.dns.osgi.export.Activator
> Bundle-ManifestVersion: 2
> Bundle-Name: com.demo.discovery.dns
> Bundle-SymbolicName: com.demo.discovery.dns
> Bundle-Version: 1.0.0.SNAPSHOT
> Created-By: 1.8.0_45 (Oracle Corporation)
> Export-Package: com.demo.cluster.discovery.dns.osgi.export;uses:="c
>  om.typesafe.scalalogging,org.osgi.framework,org.xbill.DNS,scala,scala.r
>  eflect,scala.runtime";version="1.0.0.SNAPSHOT"
> Import-Package: scala;version="[2.11,2.12)",scala.collection;version="[2
>  .11,2.12)",scala.collection.immutable;version="[2.11,2.12)",scala.colle
>  ction.mutable;version="[2.11,2.12)",scala.reflect;version="[2.11,2.12)"
>  ,scala.runtime;version="[2.11,2.12)",scala.util;version="[2.11,2.12)",c
>  om.typesafe.scalalogging;version="[3.2,4)",io.netty.bootstrap;version="
>  [5.0,6)",io.netty.buffer;version="[5.0,6)",io.netty.channel;version="[5
>  .0,6)",io.netty.channel.nio;version="[5.0,6)",io.netty.channel.socket;v
>  ersion="[5.0,6)",io.netty.channel.socket.nio;version="[5.0,6)",io.netty
>  .handler.codec;version="[5.0,6)",io.netty.handler.logging;version="[5.0
>  ,6)",io.netty.util.concurrent;version="[5.0,6)",org.osgi.framework;vers
>  ion="[1.7,2)",org.slf4j;version="[1.7,2)",org.xbill.DNS;version="[2.1,3
>  )"
> Private-Package: com.demo.cluster.discovery.dns
> Service-Component: OSGI-INF/com.demo.cluster.discovery.dns.osgi.exp
>  ort.DProv.xml,OSGI-INF/com.demo.cluster.discovery.dns.osgi.export.
>  DNSServerComponent.xml
> Tool: Bnd-2.1.0.20130426-122213
> {code}
> {code}
> karaf@root()> info
> Karaf
>   Karaf version               4.0.0.M3
>   Karaf home                  /home/viasyn/work/bin/apache-karaf-4.0.0.M3
>   Karaf base                  /home/viasyn/work/bin/apache-karaf-4.0.0.M3
>   OSGi Framework              org.apache.felix.framework-5.0.0
> JVM
>   Java Virtual Machine        Java HotSpot(TM) 64-Bit Server VM version 25.45-b02
>   Version                     1.8.0_45
>   Vendor                      Oracle Corporation
>   Pid                         29445
>   Uptime                      16 minutes
>   Total compile time          10.621 seconds
> Threads
>   Live threads                64
>   Daemon threads              57
>   Peak                        65
>   Total started               99
> Memory
>   Current heap size           51,473 kbytes
>   Maximum heap size           466,432 kbytes
>   Committed heap size         248,320 kbytes
>   Pending objects             0
>   Garbage collector           Name = 'PS Scavenge', Collections = 6, Time = 0.479 seconds
>   Garbage collector           Name = 'PS MarkSweep', Collections = 2, Time = 0.147 seconds
> Classes
>   Current classes loaded      6,031
>   Total classes loaded        6,031
>   Total classes unloaded      0
> Operating system
>   Name                        Linux version 4.0.4-gentoo-00
>   Architecture                amd64
>   Processors                  4
> {code}
> Related discussion in mailing list: http://karaf.922171.n3.nabble.com/ClassNotFoundException-after-bundle-redeploy-td4040920.html



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