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From "Wing Lian (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1778) Change classloader strategy to load version from non system classloader
Date Thu, 16 Dec 2010 11:12:02 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12972044#action_12972044
] 

Wing Lian commented on CASSANDRA-1778:
--------------------------------------

I am still getting the warning below in the log when starting rc2. (this issues is listed
as fixed in rc2 changelog)


 WARN [main] 2010-12-16 02:48:19,677 FBUtilities.java (line 527) Unable to load version.properties
java.lang.NullPointerException
  at java.util.Properties$LineReader.readLine(Properties.java:435)
  at java.util.Properties.load0(Properties.java:354)
  at java.util.Properties.load(Properties.java:342)
  at org.apache.cassandra.utils.FBUtilities.getReleaseVersionString(FBUtilities.java:522)
  at org.apache.cassandra.service.StorageService.initServer(StorageService.java:348)
  at org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:160)
  at org.apache.cassandra.thrift.CassandraDaemon.setup(CassandraDaemon.java:55)
  at org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:216)
  at org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:134)
 INFO [main] 2010-12-16 02:48:19,678 StorageService.java (line 348) Cassandra version: debug
version
 INFO [main] 2010-12-16 02:48:19,678 StorageService.java (line 349) Thrift API version: 19.4.0


> Change classloader strategy to load version from non system classloader
> -----------------------------------------------------------------------
>
>                 Key: CASSANDRA-1778
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1778
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.7 beta 3
>            Reporter: Bram de Kruijff
>            Assignee: Bram de Kruijff
>
> At present when initializing the StorageService, FBUtilities.getReleaseVersionString()
 tries to load the version.info resource from the ClassLoader.getSystemClassLoader(). This
typically fails in an embedded scenario (such as an OSGi container) resulting in a dummy version
at INFO and a stacktrace at WARN
>             logger_.warn("Unable to load version.properties", e);
>             return "debug version";
> My guess is that changing the implementation to using the FBUtilities.class.getClassLoader()
for loading resources would solve it and will work in almost any case I can think off. However,
as discussed on the Apache Felix mailing list, the only "right"way to do it is to allow an
optional ClassLoader to be specified (@see http://www.mail-archive.com/users@felix.apache.org/msg09060.html).
> This issue was initially reported at the Amdatu jira:
> http://jira.amdatu.org/jira/browse/AMDATU-127

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