[jira] [Commented] (NUTCH-1674) Use batchId filter to enable scan (GORA-119) for Fetch,Parse,Update,Index

["Alparslan Avcı (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NUTCH-1674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13856347#comment-13856347 ] 

Alparslan Avcı commented on NUTCH-1674:
---------------------------------------

Hi [~otis], I've run a few tests and got good results. But I plan to run a few more. After that, I will share the details in here.

GORA-119 is updated with 'gora-119-v1.1.patch' recently and I have just added a new patch according to that update.

> Use batchId filter to enable scan (GORA-119) for Fetch,Parse,Update,Index
> -------------------------------------------------------------------------
>
>                 Key: NUTCH-1674
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1674
>             Project: Nutch
>          Issue Type: Improvement
>    Affects Versions: 2.3
>            Reporter: Nguyen Manh Tien
>             Fix For: 2.3
>
>         Attachments: NUTCH-1674.patch, NUTCH-1674_2.patch
>
>
> Nutch always scan the whole crawldb in each phrase (generate, fetch, parse, update, index). When crawldb is big, the time to scan is bigger than the actual processing time.
> We really need to skip records while scanning using GORA-119 for example we can only get records belong to a specified batchId.
> In my crawl the filter reduce the time to scan from 90 min to 30 min.



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