[jira] [Commented] (OAK-2118) Aggregation cursor introduces doubles in the result set

["Alex Parvulescu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OAK-2118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14143142#comment-14143142 ] 

Alex Parvulescu commented on OAK-2118:
--------------------------------------

[~edivad] feedback?

> Aggregation cursor introduces doubles in the result set
> -------------------------------------------------------
>
>                 Key: OAK-2118
>                 URL: https://issues.apache.org/jira/browse/OAK-2118
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: core
>            Reporter: Alex Parvulescu
>            Assignee: Alex Parvulescu
>         Attachments: OAK-2118.patch
>
>
> In some cases (double aggregation) the aggregation cursor in some cases will introduce doubles in the result set by replacing some good results.
> This makes the result set look like (for the attached test case):
> {code}
> "/myFolder", "/myFolder", "/myFolder/myFile/jcr:content"
> {code}
> instead of 
> {code}
> "/myFolder", "/myFolder/myFile", "/myFolder/myFile/jcr:content"
> {code}
> What actually happens is the cursor will replace the current row value with the new one ("/myFolder/myFile" will turn into "/myFolder") in the #next call. Not only this replaces the good value with the double, but it also skips the de-duplication bits, resulting in an incomplete result set with doubles sprinkled in.



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