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From "Oleksii Mohylin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-11662) Wrong classloader is used to unmarshal joining node data
Date Mon, 01 Apr 2019 09:13:00 GMT
Oleksii Mohylin created IGNITE-11662:
----------------------------------------

             Summary: Wrong classloader is used to unmarshal joining node data
                 Key: IGNITE-11662
                 URL: https://issues.apache.org/jira/browse/IGNITE-11662
             Project: Ignite
          Issue Type: Bug
    Affects Versions: 2.7
         Environment: Ignite 2.7
Karaf 4.2.0


            Reporter: Oleksii Mohylin


When a cluster coordinator node is running in Karaf container it cannot accept joining requests
from other nodes. Problem lies in unability to unmarshal joining node data in org.apache.ignite.internal.processors.cluster.GridClusterStateProcessor.validateNode()

This line
{code:java}
joiningNodeState = marsh.unmarshal((byte[]) discoData.joiningNodeData(), Thread.currentThread().getContextClassLoader());{code}
fails with
{noformat}
Error on unmarshalling discovery data from node 10.0.2.15,127.0.0.1,172.17.0.1:47501: Failed
to find class with given class loader for unmarshalling (make sure same versions of all classes
are available on all nodes or enable peer-class-loading) [clsLdr=jdk.internal.loader.ClassLoaders$AppClassLoader@5c0369c4,
cls=org.apache.ignite.internal.processors.cluster.DiscoveryDataClusterState]; node is not
allowed to join{noformat}
Apparently problem is wrong classloader returned by
{code:java}
Thread.currentThread().getContextClassLoader()){code}
which is not the one created in IgniteAbstractOsgiContextActivator.start().

*Proposed fix:* 

use proper way of obtaining classloader:
{code:java}
 U.resolveClassLoader(ctx.config()){code}
Like in other places. i.e. in GridClusterStateProcessor.collectGridNodeData().

 

 



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