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From "Romain Manni-Bucau (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OPENEJB-2119) Incorrect binary tree - IvmContext
Date Sun, 18 Oct 2015 17:16:05 GMT

    [ https://issues.apache.org/jira/browse/OPENEJB-2119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14962514#comment-14962514
] 

Romain Manni-Bucau commented on OPENEJB-2119:
---------------------------------------------

added this test https://github.com/apache/tomee/blob/c38e30dc9ef2bed4360249de7bde89f36638e992/container/openejb-core/src/test/java/org/apache/openejb/ivm/naming/IvmContextTest.java#L33
and changed a bit NameNode implementation.

Side note: the tree is know to not be well load balanced (there are some comments about it)
so idea there is just to fix the  exception you see.

> Incorrect binary tree - IvmContext
> ----------------------------------
>
>                 Key: OPENEJB-2119
>                 URL: https://issues.apache.org/jira/browse/OPENEJB-2119
>             Project: OpenEJB
>          Issue Type: Bug
>            Reporter: Milos Volauf
>            Priority: Critical
>         Attachments: Testing.java
>
>
> I get many javax.naming.NameAlreadyBoundException exceptions so I digged into org.apache.openejb.core.ivm.naming.IvmContext
and org.apache.openejb.core.ivm.naming.NameNode.
> I was strange that NameAlreadyBoundException was fired from IvmContext.rebind, which
does unbind and then bind.
> The debugging showed me that binary tree (implemented by NameNode) gets sometimes into
incorrect state and consequently unbind does not find the node.
> The problem is that IvmContext has a reference to NameNode and calls bind() but the binary
tree is correct only if bind() starts at the tree root. There is one big tree and several
contexts have their nodes in it (IvmContext.mynode) and bind new nodes starting in mynode.
> I prepared a small test case which shows how the tree can enter into incorrect state.
> I used openejb-core-4.7.1



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