[jira] [Comment Edited] (OAK-333) 1000 character path limit in MongoMK

["Thomas Mueller (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OAK-333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13565261#comment-13565261 ] 

Thomas Mueller edited comment on OAK-333 at 1/29/13 10:45 AM:
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> node name limit

I wonder how big the problem is. Non-ASCII characters are converted to {{__x0000__}} as far as I know, so 7 bytes per character. With SHA-1, 41 characters are needed for the prefix, so that a node name might contain up to 137 non-ASCII characters. When storing a title or subject (possibly user generated) in a node name that's still a bit low I think.
                
      was (Author: tmueller):
    > node name limit

I wonder how big the problem is. Non-ASCII characters are converted to _x0000_ as far as I know, so 7 bytes per character. With SHA-1, 41 characters are needed for the prefix, so that a node name might contain up to 137 non-ASCII characters. When storing a title or subject (possibly user generated) in a node name that's still a bit low I think.
                  
> 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: 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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