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From "Richa Khurana (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-1940) Exception when concurrently adding documents to Jack rabbit repository with clustering enabled
Date Mon, 16 Feb 2009 17:50:02 GMT

    [ https://issues.apache.org/jira/browse/JCR-1940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12674017#action_12674017
] 

Richa Khurana commented on JCR-1940:
------------------------------------

WRT Comment-""both users have same node id in cluster configuration in repository.xml" sounds
like a major misconfiguration. If you have multiple Jackrabbit instances accessing the same
content, then they *must* be configured as cluster nodes with separate node ids."

--- Please note that the node ids are different only, it was just an observation that i added
that the same exception stops to appear when we set the same node ids

WRT Comment-"It is perfectly valid to get an InvalidItemStateException if two different sessions
(whether on the same standalone jackrabbit or on different cluster nodes) write to the same
node or add nodes to the same parent. See the JCR specification, for example section 7.1.3.3:
http://www.day.com/specs/jcr/1.0/7.1.3.3_Invalid_Items.html "

Please be noted that each environment is pointing to jackrabbit repository in the DB and not
any shared folder on the Local File System


Please let me know if any more info is reqd.


> Exception when concurrently adding documents to Jack rabbit repository with clustering
enabled
> ----------------------------------------------------------------------------------------------
>
>                 Key: JCR-1940
>                 URL: https://issues.apache.org/jira/browse/JCR-1940
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>          Components: jackrabbit-core
>    Affects Versions: 1.5.0
>         Environment: OS - Win 2000
> JackRabbit Jars - 1.5
>            Reporter: Richa Khurana
>
> We have a enabled jackrabbit clustering. In this mode following exception occurs when
2 users simultaneouly add documents to Jack rabbit repository registered with node id 1 and
2 respectively-
> 14:59:55,312 ERROR [DocumentHelper] Exception occurred while adding a manually uploaded
document to the jackrabbit:
> javax.jcr.InvalidItemStateException: cafebabe-cafe-babe-cafe-babecafebabe has been modified
externally
>         at org.apache.jackrabbit.core.ItemImpl.save(ItemImpl.java:1109)
>         at org.apache.jackrabbit.core.SessionImpl.save(SessionImpl.java:846)
> Another observation is that when we disable clustering and both users have same node
id in cluster configuration in repository.xml, the error doesnt appear.

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