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From "Thomas Mueller (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-333) 1000 character path limit in MongoMK
Date Fri, 07 Dec 2012 11:33:20 GMT

    [ https://issues.apache.org/jira/browse/OAK-333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13526325#comment-13526325
] 

Thomas Mueller commented on OAK-333:
------------------------------------

> So if the path exceeds a limit, the first limit/2 characters are replaced

See the comment above, https://issues.apache.org/jira/browse/OAK-333?focusedCommentId=13508646&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13508646

"One could even allow recursive replacement, so that there is no limit."

But actually I don't think recursion is needed. There are other solutions that don't require
recursion, such as replace multiples of limit/2 bytes in once step.

I guess the next question will be what if the path is longer than 16 MB (the MongoDB limit
for documents)? :-)
                
> 1000 character path limit in MongoMK
> ------------------------------------
>
>                 Key: OAK-333
>                 URL: https://issues.apache.org/jira/browse/OAK-333
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: mk, mongomk
>    Affects Versions: 0.5
>            Reporter: Mete Atamel
>            Assignee: Mete Atamel
>            Priority: Minor
>         Attachments: OAK-333.patch
>
>
> In an infinite loop try to add nodes one under another to have N0/N1/N2...NN. At some
point, the current parent node will not be found and the current commit will fail. I think
this happens when the path length exceeds 1000 characters. Is this enough for a path? I was
able to create this way only 222 levels in the tree (and my node names were really short N1,
N2 ...)
> There's an automated tests for this: NodeExistsCommandMongoTest.testTreeDepth

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