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https://issues.apache.org/jira/browse/NUTCH-1829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14204012#comment-14204012
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Sebastian Nagel edited comment on NUTCH-1829 at 11/9/14 5:36 PM:
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Seems not to work on 2.x, at least, if batchId is passed from command-line:
generate() should explicitly return null if GeneratorReducer.count == 0.
was (Author: wastl-nagel):
Seems not to work on 2.x, at least, if batchId is passed from command-line:
must explicitly return null if GeneratorReducer.count == 0.
> Generator : unable to distinguish real errors
> ---------------------------------------------
>
> Key: NUTCH-1829
> URL: https://issues.apache.org/jira/browse/NUTCH-1829
> Project: Nutch
> Issue Type: Bug
> Components: nutchNewbie
> Affects Versions: 1.9, 2.2.1
> Environment: Ubuntu Server 14.04, OpenJDK 7
> Reporter: Mathieu Bouchard
> Assignee: Julien Nioche
> Fix For: 2.3, 1.10
>
> Attachments: NUTCH-1829-2x-v2.patch
>
>
> The bin/nutch generate command is returning the same error code (-1) if there
> is an error or no new segment to process, so there is no way to tell if the
> error is real or not from a shell script. This problem is related to
> NUTCH-1828.
> The problem can be fixed by modifying the following Java source file:
> http://svn.apache.org/viewvc/nutch/trunk/src/java/org/apache/nutch/crawl/Generator.java?revision=1619934&view=markup
> At line 711, if there are no new segment, the generator returns -1, which is
> the same return code returned at line 714 if there was an error.
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