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https://issues.apache.org/jira/browse/NUTCH-1616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13718296#comment-13718296
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Markus Jelsma commented on NUTCH-1616:
--------------------------------------

Well spotted!! I'm positive i did it right because i actually use a script for 
that which has it enabled as well. I manually retyped it to be a oneline for 
this comment box instead of copying a script:) Sorry for the needless confusion.

About the fetchTime thing, i'm sure that now i think about that the current 
IndexerMapReduce can produce bad results already because it might skip/delete 
records if multiple segments are input. It checks if the fetchDatum is a 
redirect, not modified or gone for the first incoming fetchDatum! I'll open an 
issue for that!

Thanks for that pointer!
                
> SegmentMerger missing proper crawl_fetch datum
> ----------------------------------------------
>
>                 Key: NUTCH-1616
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1616
>             Project: Nutch
>          Issue Type: Bug
>    Affects Versions: 1.7
>            Reporter: Markus Jelsma
>            Assignee: Markus Jelsma
>            Priority: Critical
>             Fix For: 1.8
>
>
> Merged 26036 vs. unmerged 26038 indexed documents! There are two records on 
> the merged segment that no longer have a crawl_fetch CrawlDatum with a 
> fetch_success status. Instead, the only crawl_fetch CrawlDatum has status 
> linked!
> The original segment two crawl_fetch CrawlDatums with linked and the 
> fetch_success status.
> Without the fetch_success of not_modified status it is not going to be 
> indexed.

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