[jira] [Commented] (NUTCH-1001) bin/nutch fetch/parse handle crawl/segments directory

["Markus Jelsma (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NUTCH-1001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13085659#comment-13085659 ] 

Markus Jelsma commented on NUTCH-1001:
--------------------------------------

Hi,

The indenting style is not correct and it lacks a 2.0 patch. I also feel that a -dir option would be a better idea and would also be in the style of other Nutch jobs.

More thoughts?

> bin/nutch fetch/parse handle crawl/segments directory
> -----------------------------------------------------
>
>                 Key: NUTCH-1001
>                 URL: https://issues.apache.org/jira/browse/NUTCH-1001
>             Project: Nutch
>          Issue Type: Improvement
>            Reporter: Gabriele Kahlout
>            Priority: Minor
>             Fix For: 1.4, 2.0
>
>         Attachments: NUTCH-1001.patch
>
>
> I'm having issues porting scripts across different systems to support the step of extracting the latest/only segments resulting from the generate phase.
> Variants include:
> $ export SEGMENT=crawl/segments/`ls -tr crawl/segments|tail -1` #[1]
> $ s1=`ls -d crawl/segments/2* | tail -1` #[2]
> $ segment=`$HADOOP_HOME/bin/hadoop dfs -ls crawl/segments | tail -1 | grep -o [a-zA-Z0-9/\-]* |tail -1`
> $ segment=`$HADOOP_HOME/bin/hdfs -ls crawl/segments | tail -1 | grep -o [a-zA-Z0-9/\-]* |tail -1`
> And I'm not sure what windows users would have to do. Some users may also do with:
> bin/nutch fetch with crawl/segments/2*
> But I don't see a need in having the user extract/worry-about the latest/only segment, and have it a described step in every nutch tutorial. More over only fetch and parse expect a segment while other commands are fine with the directory of segments.
> Therefore, I think it's beneficial if fetch and parse also handle directories of segments. 
> [1] http://www.lucidimagination.com/blog/2009/03/09/nutch-solr/
> [2] http://wiki.apache.org/nutch/NutchTutorial#Command_Line_Searching

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