[jira] Commented: (JCR-1940) Exception when concurrently adding documents to Jack rabbit repository with clustering enabled

["Richa Khurana (JIRA)" <ji...@apache.org>]

    [ 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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